mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-19 16:38:53 +09:00
![Albert ARIBAUD](/assets/img/avatar_default.png)
There was a mix of UTF-8 and ISO-8859 files in the U-Boot source tree, which could cause issues with the patchwork review system. This commit converts all ISO-8859 files to UTF-8. Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
1088 lines
31 KiB
C
1088 lines
31 KiB
C
/***********************************************************************
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*
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M* Modul: lwmon.c
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M*
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M* Content: LWMON specific U-Boot commands.
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*
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* (C) Copyright 2001, 2002
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* DENX Software Engineering
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* Wolfgang Denk, wd@denx.de
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*
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D* Design: wd@denx.de
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C* Coding: wd@denx.de
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V* Verification: dzu@denx.de
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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***********************************************************************/
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/*---------------------------- Headerfiles ----------------------------*/
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#include <common.h>
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#include <mpc8xx.h>
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#include <commproc.h>
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#include <i2c.h>
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#include <command.h>
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#include <malloc.h>
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#include <post.h>
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#include <serial.h>
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#include <linux/types.h>
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#include <linux/string.h> /* for strdup */
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DECLARE_GLOBAL_DATA_PTR;
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/*------------------------ Local prototypes ---------------------------*/
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static long int dram_size (long int, long int *, long int);
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static void kbd_init (void);
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static int compare_magic (uchar *kbd_data, uchar *str);
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/*--------------------- Local macros and constants --------------------*/
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#define _NOT_USED_ 0xFFFFFFFF
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#ifdef CONFIG_MODEM_SUPPORT
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static int key_pressed(void);
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extern void disable_putc(void);
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#endif /* CONFIG_MODEM_SUPPORT */
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/*
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* 66 MHz SDRAM access using UPM A
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*/
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const uint sdram_table[] =
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{
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#if defined(CONFIG_SYS_MEMORY_75) || defined(CONFIG_SYS_MEMORY_8E)
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/*
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* Single Read. (Offset 0 in UPM RAM)
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*/
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0x1F0DFC04, 0xEEAFBC04, 0x11AF7C04, 0xEFBAFC00,
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0x1FF5FC47, /* last */
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/*
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* SDRAM Initialization (offset 5 in UPM RAM)
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*
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* This is no UPM entry point. The following definition uses
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* the remaining space to establish an initialization
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* sequence, which is executed by a RUN command.
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*
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*/
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0x1FF5FC34, 0xEFEABC34, 0x1FB57C35, /* last */
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/*
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* Burst Read. (Offset 8 in UPM RAM)
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*/
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0x1F0DFC04, 0xEEAFBC04, 0x10AF7C04, 0xF0AFFC00,
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0xF0AFFC00, 0xF1AFFC00, 0xEFBAFC00, 0x1FF5FC47, /* last */
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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/*
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* Single Write. (Offset 18 in UPM RAM)
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*/
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0x1F2DFC04, 0xEEABBC00, 0x01B27C04, 0x1FF5FC47, /* last */
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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/*
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* Burst Write. (Offset 20 in UPM RAM)
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*/
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0x1F0DFC04, 0xEEABBC00, 0x10A77C00, 0xF0AFFC00,
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0xF0AFFC00, 0xE1BAFC04, 0x01FF5FC47, /* last */
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_NOT_USED_,
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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/*
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* Refresh (Offset 30 in UPM RAM)
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*/
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0x1FFD7C84, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04,
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0xFFFFFC84, 0xFFFFFC07, /* last */
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_NOT_USED_, _NOT_USED_,
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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/*
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* Exception. (Offset 3c in UPM RAM)
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*/
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0x7FFFFC07, /* last */
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0xFFFFFCFF, 0xFFFFFCFF, 0xFFFFFCFF,
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#endif
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#ifdef CONFIG_SYS_MEMORY_7E
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/*
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* Single Read. (Offset 0 in UPM RAM)
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*/
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0x0E2DBC04, 0x11AF7C04, 0xEFBAFC00, 0x1FF5FC47, /* last */
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_NOT_USED_,
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/*
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* SDRAM Initialization (offset 5 in UPM RAM)
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*
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* This is no UPM entry point. The following definition uses
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* the remaining space to establish an initialization
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* sequence, which is executed by a RUN command.
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*
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*/
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0x1FF5FC34, 0xEFEABC34, 0x1FB57C35, /* last */
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/*
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* Burst Read. (Offset 8 in UPM RAM)
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*/
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0x0E2DBC04, 0x10AF7C04, 0xF0AFFC00, 0xF0AFFC00,
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0xF1AFFC00, 0xEFBAFC00, 0x1FF5FC47, /* last */
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_NOT_USED_,
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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/*
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* Single Write. (Offset 18 in UPM RAM)
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*/
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0x0E29BC04, 0x01B27C04, 0x1FF5FC47, /* last */
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_NOT_USED_,
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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/*
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* Burst Write. (Offset 20 in UPM RAM)
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*/
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0x0E29BC04, 0x10A77C00, 0xF0AFFC00, 0xF0AFFC00,
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0xE1BAFC04, 0x1FF5FC47, /* last */
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_NOT_USED_, _NOT_USED_,
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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/*
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* Refresh (Offset 30 in UPM RAM)
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*/
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0x1FFD7C84, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04,
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0xFFFFFC84, 0xFFFFFC07, /* last */
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_NOT_USED_, _NOT_USED_,
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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/*
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* Exception. (Offset 3c in UPM RAM)
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*/
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0x7FFFFC07, /* last */
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0xFFFFFCFF, 0xFFFFFCFF, 0xFFFFFCFF,
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#endif
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};
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/*
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* Check Board Identity:
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*
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*/
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/***********************************************************************
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F* Function: int checkboard (void) P*A*Z*
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*
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P* Parameters: none
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P*
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P* Returnvalue: int - 0 is always returned
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*
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Z* Intention: This function is the checkboard() method implementation
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Z* for the lwmon board. Only a standard message is printed.
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*
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D* Design: wd@denx.de
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C* Coding: wd@denx.de
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V* Verification: dzu@denx.de
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***********************************************************************/
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int checkboard (void)
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{
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puts ("Board: LICCON Konsole LCD3\n");
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return (0);
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}
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/***********************************************************************
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F* Function: phys_size_t initdram (int board_type) P*A*Z*
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*
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P* Parameters: int board_type
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P* - Usually type of the board - ignored here.
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P*
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P* Returnvalue: long int
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P* - Size of initialized memory
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*
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Z* Intention: This function is the initdram() method implementation
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Z* for the lwmon board.
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Z* The memory controller is initialized to access the
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Z* DRAM.
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*
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D* Design: wd@denx.de
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C* Coding: wd@denx.de
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V* Verification: dzu@denx.de
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***********************************************************************/
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phys_size_t initdram (int board_type)
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{
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volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
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volatile memctl8xx_t *memctl = &immr->im_memctl;
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long int size_b0;
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long int size8, size9;
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int i;
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/*
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* Configure UPMA for SDRAM
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*/
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upmconfig (UPMA, (uint *)sdram_table, sizeof(sdram_table)/sizeof(uint));
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memctl->memc_mptpr = CONFIG_SYS_MPTPR;
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/* burst length=4, burst type=sequential, CAS latency=2 */
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memctl->memc_mar = CONFIG_SYS_MAR;
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/*
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* Map controller bank 3 to the SDRAM bank at preliminary address.
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*/
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memctl->memc_or3 = CONFIG_SYS_OR3_PRELIM;
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memctl->memc_br3 = CONFIG_SYS_BR3_PRELIM;
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/* initialize memory address register */
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memctl->memc_mamr = CONFIG_SYS_MAMR_8COL; /* refresh not enabled yet */
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/* mode initialization (offset 5) */
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udelay (200); /* 0x80006105 */
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memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS3 | MCR_MLCF (1) | MCR_MAD (0x05);
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/* run 2 refresh sequence with 4-beat refresh burst (offset 0x30) */
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udelay (1); /* 0x80006130 */
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memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS3 | MCR_MLCF (1) | MCR_MAD (0x30);
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udelay (1); /* 0x80006130 */
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memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS3 | MCR_MLCF (1) | MCR_MAD (0x30);
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udelay (1); /* 0x80006106 */
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memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS3 | MCR_MLCF (1) | MCR_MAD (0x06);
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memctl->memc_mamr |= MAMR_PTAE; /* refresh enabled */
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udelay (200);
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/* Need at least 10 DRAM accesses to stabilize */
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for (i = 0; i < 10; ++i) {
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volatile unsigned long *addr =
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(volatile unsigned long *) SDRAM_BASE3_PRELIM;
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unsigned long val;
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val = *(addr + i);
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*(addr + i) = val;
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}
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/*
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* Check Bank 0 Memory Size for re-configuration
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*
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* try 8 column mode
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*/
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size8 = dram_size (CONFIG_SYS_MAMR_8COL, (long *)SDRAM_BASE3_PRELIM, SDRAM_MAX_SIZE);
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udelay (1000);
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/*
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* try 9 column mode
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*/
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size9 = dram_size (CONFIG_SYS_MAMR_9COL, (long *)SDRAM_BASE3_PRELIM, SDRAM_MAX_SIZE);
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if (size8 < size9) { /* leave configuration at 9 columns */
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size_b0 = size9;
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memctl->memc_mamr = CONFIG_SYS_MAMR_9COL | MAMR_PTAE;
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udelay (500);
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} else { /* back to 8 columns */
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size_b0 = size8;
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memctl->memc_mamr = CONFIG_SYS_MAMR_8COL | MAMR_PTAE;
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udelay (500);
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}
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/*
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* Final mapping:
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*/
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memctl->memc_or3 = ((-size_b0) & 0xFFFF0000) |
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OR_CSNT_SAM | OR_G5LS | SDRAM_TIMING;
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memctl->memc_br3 = (CONFIG_SYS_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V;
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udelay (1000);
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return (size_b0);
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}
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/***********************************************************************
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F* Function: static long int dram_size (long int mamr_value,
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F* long int *base,
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F* long int maxsize) P*A*Z*
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*
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P* Parameters: long int mamr_value
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P* - Value for MAMR for the test
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P* long int *base
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P* - Base address for the test
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P* long int maxsize
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P* - Maximum size to test for
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P*
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P* Returnvalue: long int
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P* - Size of probed memory
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*
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Z* Intention: Check memory range for valid RAM. A simple memory test
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Z* determines the actually available RAM size between
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Z* addresses `base' and `base + maxsize'. Some (not all)
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Z* hardware errors are detected:
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Z* - short between address lines
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Z* - short between data lines
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*
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D* Design: wd@denx.de
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C* Coding: wd@denx.de
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V* Verification: dzu@denx.de
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***********************************************************************/
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static long int dram_size (long int mamr_value, long int *base, long int maxsize)
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{
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volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
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volatile memctl8xx_t *memctl = &immr->im_memctl;
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memctl->memc_mamr = mamr_value;
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return (get_ram_size(base, maxsize));
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}
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/* ------------------------------------------------------------------------- */
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#ifndef PB_ENET_TENA
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# define PB_ENET_TENA ((uint)0x00002000) /* PB 18 */
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#endif
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/***********************************************************************
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F* Function: int board_early_init_f (void) P*A*Z*
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*
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P* Parameters: none
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P*
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P* Returnvalue: int
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P* - 0 is always returned.
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*
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Z* Intention: This function is the board_early_init_f() method implementation
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Z* for the lwmon board.
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Z* Disable Ethernet TENA on Port B.
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*
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D* Design: wd@denx.de
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C* Coding: wd@denx.de
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V* Verification: dzu@denx.de
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***********************************************************************/
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int board_early_init_f (void)
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{
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volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
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/* Disable Ethernet TENA on Port B
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* Necessary because of pull up in COM3 port.
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*
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* This is just a preliminary fix, intended to turn off TENA
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* as soon as possible to avoid noise on the network. Once
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* I2C is running we will make sure the interface is
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* correctly initialized.
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*/
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immr->im_cpm.cp_pbpar &= ~PB_ENET_TENA;
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immr->im_cpm.cp_pbodr &= ~PB_ENET_TENA;
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immr->im_cpm.cp_pbdat &= ~PB_ENET_TENA; /* set to 0 = disabled */
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immr->im_cpm.cp_pbdir |= PB_ENET_TENA;
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return (0);
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}
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/* ------------------------------------------------------------------------- */
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/***********************************************************************
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F* Function: void reset_phy (void) P*A*Z*
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*
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P* Parameters: none
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P*
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P* Returnvalue: none
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*
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Z* Intention: Reset the PHY. In the lwmon case we do this by the
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Z* signaling the PIC I/O expander.
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*
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D* Design: wd@denx.de
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C* Coding: wd@denx.de
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V* Verification: dzu@denx.de
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***********************************************************************/
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void reset_phy (void)
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{
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uchar c;
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#ifdef DEBUG
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printf ("### Switch on Ethernet for SCC2 ###\n");
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#endif
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c = pic_read (0x61);
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#ifdef DEBUG
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printf ("Old PIC read: reg_61 = 0x%02x\n", c);
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#endif
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c |= 0x40; /* disable COM3 */
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c &= ~0x80; /* enable Ethernet */
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pic_write (0x61, c);
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#ifdef DEBUG
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c = pic_read (0x61);
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printf ("New PIC read: reg_61 = 0x%02x\n", c);
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#endif
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udelay (1000);
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}
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/*------------------------- Keyboard controller -----------------------*/
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/* command codes */
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#define KEYBD_CMD_READ_KEYS 0x01
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#define KEYBD_CMD_READ_VERSION 0x02
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#define KEYBD_CMD_READ_STATUS 0x03
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#define KEYBD_CMD_RESET_ERRORS 0x10
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/* status codes */
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#define KEYBD_STATUS_MASK 0x3F
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#define KEYBD_STATUS_H_RESET 0x20
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#define KEYBD_STATUS_BROWNOUT 0x10
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#define KEYBD_STATUS_WD_RESET 0x08
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#define KEYBD_STATUS_OVERLOAD 0x04
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#define KEYBD_STATUS_ILLEGAL_WR 0x02
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#define KEYBD_STATUS_ILLEGAL_RD 0x01
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/* Number of bytes returned from Keyboard Controller */
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#define KEYBD_VERSIONLEN 2 /* version information */
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#define KEYBD_DATALEN 9 /* normal key scan data */
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/* maximum number of "magic" key codes that can be assigned */
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static uchar kbd_addr = CONFIG_SYS_I2C_KEYBD_ADDR;
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static uchar *key_match (uchar *);
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#define KEYBD_SET_DEBUGMODE '#' /* Magic key to enable debug output */
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/***********************************************************************
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F* Function: int board_postclk_init (void) P*A*Z*
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*
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P* Parameters: none
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P*
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P* Returnvalue: int
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P* - 0 is always returned.
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*
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Z* Intention: This function is the board_postclk_init() method implementation
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Z* for the lwmon board.
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*
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***********************************************************************/
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int board_postclk_init (void)
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{
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kbd_init();
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#ifdef CONFIG_MODEM_SUPPORT
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if (key_pressed()) {
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disable_putc(); /* modem doesn't understand banner etc */
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gd->do_mdm_init = 1;
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}
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#endif
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return (0);
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}
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struct serial_device * default_serial_console (void)
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{
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return gd->do_mdm_init ? &serial_scc_device : &serial_smc_device;
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}
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static void kbd_init (void)
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{
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uchar kbd_data[KEYBD_DATALEN];
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uchar tmp_data[KEYBD_DATALEN];
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uchar val, errcd;
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int i;
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|
|
i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
|
|
|
|
gd->kbd_status = 0;
|
|
|
|
/* Forced by PIC. Delays <= 175us loose */
|
|
udelay(1000);
|
|
|
|
/* Read initial keyboard error code */
|
|
val = KEYBD_CMD_READ_STATUS;
|
|
i2c_write (kbd_addr, 0, 0, &val, 1);
|
|
i2c_read (kbd_addr, 0, 0, &errcd, 1);
|
|
/* clear unused bits */
|
|
errcd &= KEYBD_STATUS_MASK;
|
|
/* clear "irrelevant" bits. Recommended by Martin Rajek, LWN */
|
|
errcd &= ~(KEYBD_STATUS_H_RESET|KEYBD_STATUS_BROWNOUT);
|
|
if (errcd) {
|
|
gd->kbd_status |= errcd << 8;
|
|
}
|
|
/* Reset error code and verify */
|
|
val = KEYBD_CMD_RESET_ERRORS;
|
|
i2c_write (kbd_addr, 0, 0, &val, 1);
|
|
udelay(1000); /* delay NEEDED by keyboard PIC !!! */
|
|
|
|
val = KEYBD_CMD_READ_STATUS;
|
|
i2c_write (kbd_addr, 0, 0, &val, 1);
|
|
i2c_read (kbd_addr, 0, 0, &val, 1);
|
|
|
|
val &= KEYBD_STATUS_MASK; /* clear unused bits */
|
|
if (val) { /* permanent error, report it */
|
|
gd->kbd_status |= val;
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Read current keyboard state.
|
|
*
|
|
* After the error reset it may take some time before the
|
|
* keyboard PIC picks up a valid keyboard scan - the total
|
|
* scan time is approx. 1.6 ms (information by Martin Rajek,
|
|
* 28 Sep 2002). We read a couple of times for the keyboard
|
|
* to stabilize, using a big enough delay.
|
|
* 10 times should be enough. If the data is still changing,
|
|
* we use what we get :-(
|
|
*/
|
|
|
|
memset (tmp_data, 0xFF, KEYBD_DATALEN); /* impossible value */
|
|
for (i=0; i<10; ++i) {
|
|
val = KEYBD_CMD_READ_KEYS;
|
|
i2c_write (kbd_addr, 0, 0, &val, 1);
|
|
i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_DATALEN);
|
|
|
|
if (memcmp(kbd_data, tmp_data, KEYBD_DATALEN) == 0) {
|
|
/* consistent state, done */
|
|
break;
|
|
}
|
|
/* remeber last state, delay, and retry */
|
|
memcpy (tmp_data, kbd_data, KEYBD_DATALEN);
|
|
udelay (5000);
|
|
}
|
|
}
|
|
|
|
/***********************************************************************
|
|
F* Function: int misc_init_r (void) P*A*Z*
|
|
*
|
|
P* Parameters: none
|
|
P*
|
|
P* Returnvalue: int
|
|
P* - 0 is always returned, even in the case of a keyboard
|
|
P* error.
|
|
*
|
|
Z* Intention: This function is the misc_init_r() method implementation
|
|
Z* for the lwmon board.
|
|
Z* The keyboard controller is initialized and the result
|
|
Z* of a read copied to the environment variable "keybd".
|
|
Z* If KEYBD_SET_DEBUGMODE is defined, a check is made for
|
|
Z* this key, and if found display to the LCD will be enabled.
|
|
Z* The keys in "keybd" are checked against the magic
|
|
Z* keycommands defined in the environment.
|
|
Z* See also key_match().
|
|
*
|
|
D* Design: wd@denx.de
|
|
C* Coding: wd@denx.de
|
|
V* Verification: dzu@denx.de
|
|
***********************************************************************/
|
|
int misc_init_r (void)
|
|
{
|
|
uchar kbd_data[KEYBD_DATALEN];
|
|
char keybd_env[2 * KEYBD_DATALEN + 1];
|
|
uchar kbd_init_status = gd->kbd_status >> 8;
|
|
uchar kbd_status = gd->kbd_status;
|
|
uchar val;
|
|
char *str;
|
|
int i;
|
|
|
|
if (kbd_init_status) {
|
|
printf ("KEYBD: Error %02X\n", kbd_init_status);
|
|
}
|
|
if (kbd_status) { /* permanent error, report it */
|
|
printf ("*** Keyboard error code %02X ***\n", kbd_status);
|
|
sprintf (keybd_env, "%02X", kbd_status);
|
|
setenv ("keybd", keybd_env);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Now we know that we have a working keyboard, so disable
|
|
* all output to the LCD except when a key press is detected.
|
|
*/
|
|
|
|
if ((console_assign (stdout, "serial") < 0) ||
|
|
(console_assign (stderr, "serial") < 0)) {
|
|
printf ("Can't assign serial port as output device\n");
|
|
}
|
|
|
|
/* Read Version */
|
|
val = KEYBD_CMD_READ_VERSION;
|
|
i2c_write (kbd_addr, 0, 0, &val, 1);
|
|
i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_VERSIONLEN);
|
|
printf ("KEYBD: Version %d.%d\n", kbd_data[0], kbd_data[1]);
|
|
|
|
/* Read current keyboard state */
|
|
val = KEYBD_CMD_READ_KEYS;
|
|
i2c_write (kbd_addr, 0, 0, &val, 1);
|
|
i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_DATALEN);
|
|
|
|
for (i = 0; i < KEYBD_DATALEN; ++i) {
|
|
sprintf (keybd_env + i + i, "%02X", kbd_data[i]);
|
|
}
|
|
setenv ("keybd", keybd_env);
|
|
|
|
str = strdup ((char *)key_match (kbd_data)); /* decode keys */
|
|
#ifdef KEYBD_SET_DEBUGMODE
|
|
if (kbd_data[0] == KEYBD_SET_DEBUGMODE) { /* set debug mode */
|
|
if ((console_assign (stdout, "lcd") < 0) ||
|
|
(console_assign (stderr, "lcd") < 0)) {
|
|
printf ("Can't assign LCD display as output device\n");
|
|
}
|
|
}
|
|
#endif /* KEYBD_SET_DEBUGMODE */
|
|
#ifdef CONFIG_PREBOOT /* automatically configure "preboot" command on key match */
|
|
setenv ("preboot", str); /* set or delete definition */
|
|
#endif /* CONFIG_PREBOOT */
|
|
if (str != NULL) {
|
|
free (str);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
#ifdef CONFIG_PREBOOT
|
|
|
|
static uchar kbd_magic_prefix[] = "key_magic";
|
|
static uchar kbd_command_prefix[] = "key_cmd";
|
|
|
|
static int compare_magic (uchar *kbd_data, uchar *str)
|
|
{
|
|
uchar compare[KEYBD_DATALEN-1];
|
|
char *nxt;
|
|
int i;
|
|
|
|
/* Don't include modifier byte */
|
|
memcpy (compare, kbd_data+1, KEYBD_DATALEN-1);
|
|
|
|
for (; str != NULL; str = (*nxt) ? (uchar *)(nxt+1) : (uchar *)nxt) {
|
|
uchar c;
|
|
int k;
|
|
|
|
c = (uchar) simple_strtoul ((char *)str, (char **) (&nxt), 16);
|
|
|
|
if (str == (uchar *)nxt) { /* invalid character */
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Check if this key matches the input.
|
|
* Set matches to zero, so they match only once
|
|
* and we can find duplicates or extra keys
|
|
*/
|
|
for (k = 0; k < sizeof(compare); ++k) {
|
|
if (compare[k] == '\0') /* only non-zero entries */
|
|
continue;
|
|
if (c == compare[k]) { /* found matching key */
|
|
compare[k] = '\0';
|
|
break;
|
|
}
|
|
}
|
|
if (k == sizeof(compare)) {
|
|
return -1; /* unmatched key */
|
|
}
|
|
}
|
|
|
|
/*
|
|
* A full match leaves no keys in the `compare' array,
|
|
*/
|
|
for (i = 0; i < sizeof(compare); ++i) {
|
|
if (compare[i])
|
|
{
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/***********************************************************************
|
|
F* Function: static uchar *key_match (uchar *kbd_data) P*A*Z*
|
|
*
|
|
P* Parameters: uchar *kbd_data
|
|
P* - The keys to match against our magic definitions
|
|
P*
|
|
P* Returnvalue: uchar *
|
|
P* - != NULL: Pointer to the corresponding command(s)
|
|
P* NULL: No magic is about to happen
|
|
*
|
|
Z* Intention: Check if pressed key(s) match magic sequence,
|
|
Z* and return the command string associated with that key(s).
|
|
Z*
|
|
Z* If no key press was decoded, NULL is returned.
|
|
Z*
|
|
Z* Note: the first character of the argument will be
|
|
Z* overwritten with the "magic charcter code" of the
|
|
Z* decoded key(s), or '\0'.
|
|
Z*
|
|
Z* Note: the string points to static environment data
|
|
Z* and must be saved before you call any function that
|
|
Z* modifies the environment.
|
|
*
|
|
D* Design: wd@denx.de
|
|
C* Coding: wd@denx.de
|
|
V* Verification: dzu@denx.de
|
|
***********************************************************************/
|
|
static uchar *key_match (uchar *kbd_data)
|
|
{
|
|
char magic[sizeof (kbd_magic_prefix) + 1];
|
|
uchar *suffix;
|
|
char *kbd_magic_keys;
|
|
|
|
/*
|
|
* The following string defines the characters that can pe appended
|
|
* to "key_magic" to form the names of environment variables that
|
|
* hold "magic" key codes, i. e. such key codes that can cause
|
|
* pre-boot actions. If the string is empty (""), then only
|
|
* "key_magic" is checked (old behaviour); the string "125" causes
|
|
* checks for "key_magic1", "key_magic2" and "key_magic5", etc.
|
|
*/
|
|
if ((kbd_magic_keys = getenv ("magic_keys")) == NULL)
|
|
kbd_magic_keys = "";
|
|
|
|
/* loop over all magic keys;
|
|
* use '\0' suffix in case of empty string
|
|
*/
|
|
for (suffix=(uchar *)kbd_magic_keys; *suffix || suffix==(uchar *)kbd_magic_keys; ++suffix) {
|
|
sprintf (magic, "%s%c", kbd_magic_prefix, *suffix);
|
|
#if 0
|
|
printf ("### Check magic \"%s\"\n", magic);
|
|
#endif
|
|
if (compare_magic(kbd_data, (uchar *)getenv(magic)) == 0) {
|
|
char cmd_name[sizeof (kbd_command_prefix) + 1];
|
|
char *cmd;
|
|
|
|
sprintf (cmd_name, "%s%c", kbd_command_prefix, *suffix);
|
|
|
|
cmd = getenv (cmd_name);
|
|
#if 0
|
|
printf ("### Set PREBOOT to $(%s): \"%s\"\n",
|
|
cmd_name, cmd ? cmd : "<<NULL>>");
|
|
#endif
|
|
*kbd_data = *suffix;
|
|
return ((uchar *)cmd);
|
|
}
|
|
}
|
|
#if 0
|
|
printf ("### Delete PREBOOT\n");
|
|
#endif
|
|
*kbd_data = '\0';
|
|
return (NULL);
|
|
}
|
|
#endif /* CONFIG_PREBOOT */
|
|
|
|
#ifdef CONFIG_LCD_INFO
|
|
#include <lcd.h>
|
|
#include <version.h>
|
|
#include <timestamp.h>
|
|
|
|
void lcd_show_board_info(void)
|
|
{
|
|
char temp[32];
|
|
|
|
lcd_printf ("%s (%s - %s)\n", U_BOOT_VERSION, U_BOOT_DATE, U_BOOT_TIME);
|
|
lcd_printf ("(C) 2008 DENX Software Engineering GmbH\n");
|
|
lcd_printf (" Wolfgang DENK, wd@denx.de\n");
|
|
#ifdef CONFIG_LCD_INFO_BELOW_LOGO
|
|
lcd_printf ("MPC823 CPU at %s MHz\n",
|
|
strmhz(temp, gd->cpu_clk));
|
|
lcd_printf (" %ld MB RAM, %ld MB Flash\n",
|
|
gd->ram_size >> 20,
|
|
gd->bd->bi_flashsize >> 20 );
|
|
#else
|
|
/* leave one blank line */
|
|
lcd_printf ("\nMPC823 CPU at %s MHz, %ld MB RAM, %ld MB Flash\n",
|
|
strmhz(temp, gd->cpu_clk),
|
|
gd->ram_size >> 20,
|
|
gd->bd->bi_flashsize >> 20 );
|
|
#endif /* CONFIG_LCD_INFO_BELOW_LOGO */
|
|
}
|
|
#endif /* CONFIG_LCD_INFO */
|
|
|
|
/*---------------Board Special Commands: PIC read/write ---------------*/
|
|
|
|
#if defined(CONFIG_CMD_BSP)
|
|
/***********************************************************************
|
|
F* Function: int do_pic (cmd_tbl_t *cmdtp, int flag,
|
|
F* int argc, char * const argv[]) P*A*Z*
|
|
*
|
|
P* Parameters: cmd_tbl_t *cmdtp
|
|
P* - Pointer to our command table entry
|
|
P* int flag
|
|
P* - If the CMD_FLAG_REPEAT bit is set, then this call is
|
|
P* a repetition
|
|
P* int argc
|
|
P* - Argument count
|
|
P* char * const argv[]
|
|
P* - Array of the actual arguments
|
|
P*
|
|
P* Returnvalue: int
|
|
P* - 0 The command was handled successfully
|
|
P* 1 An error occurred
|
|
*
|
|
Z* Intention: Implement the "pic [read|write]" commands.
|
|
Z* The read subcommand takes one argument, the register,
|
|
Z* whereas the write command takes two, the register and
|
|
Z* the new value.
|
|
*
|
|
D* Design: wd@denx.de
|
|
C* Coding: wd@denx.de
|
|
V* Verification: dzu@denx.de
|
|
***********************************************************************/
|
|
int do_pic (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
|
{
|
|
uchar reg, val;
|
|
|
|
switch (argc) {
|
|
case 3: /* PIC read reg */
|
|
if (strcmp (argv[1], "read") != 0)
|
|
break;
|
|
|
|
reg = simple_strtoul (argv[2], NULL, 16);
|
|
|
|
printf ("PIC read: reg %02x: %02x\n\n", reg, pic_read (reg));
|
|
|
|
return 0;
|
|
case 4: /* PIC write reg val */
|
|
if (strcmp (argv[1], "write") != 0)
|
|
break;
|
|
|
|
reg = simple_strtoul (argv[2], NULL, 16);
|
|
val = simple_strtoul (argv[3], NULL, 16);
|
|
|
|
printf ("PIC write: reg %02x val 0x%02x: %02x => ",
|
|
reg, val, pic_read (reg));
|
|
pic_write (reg, val);
|
|
printf ("%02x\n\n", pic_read (reg));
|
|
return 0;
|
|
default:
|
|
break;
|
|
}
|
|
return cmd_usage(cmdtp);
|
|
}
|
|
U_BOOT_CMD(
|
|
pic, 4, 1, do_pic,
|
|
"read and write PIC registers",
|
|
"read reg - read PIC register `reg'\n"
|
|
"pic write reg val - write value `val' to PIC register `reg'"
|
|
);
|
|
|
|
/***********************************************************************
|
|
F* Function: int do_kbd (cmd_tbl_t *cmdtp, int flag,
|
|
F* int argc, char * const argv[]) P*A*Z*
|
|
*
|
|
P* Parameters: cmd_tbl_t *cmdtp
|
|
P* - Pointer to our command table entry
|
|
P* int flag
|
|
P* - If the CMD_FLAG_REPEAT bit is set, then this call is
|
|
P* a repetition
|
|
P* int argc
|
|
P* - Argument count
|
|
P* char * const argv[]
|
|
P* - Array of the actual arguments
|
|
P*
|
|
P* Returnvalue: int
|
|
P* - 0 is always returned.
|
|
*
|
|
Z* Intention: Implement the "kbd" command.
|
|
Z* The keyboard status is read. The result is printed on
|
|
Z* the console and written into the "keybd" environment
|
|
Z* variable.
|
|
*
|
|
D* Design: wd@denx.de
|
|
C* Coding: wd@denx.de
|
|
V* Verification: dzu@denx.de
|
|
***********************************************************************/
|
|
int do_kbd (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
|
{
|
|
uchar kbd_data[KEYBD_DATALEN];
|
|
char keybd_env[2 * KEYBD_DATALEN + 1];
|
|
uchar val;
|
|
int i;
|
|
|
|
#if 0 /* Done in kbd_init */
|
|
i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
|
|
#endif
|
|
|
|
/* Read keys */
|
|
val = KEYBD_CMD_READ_KEYS;
|
|
i2c_write (kbd_addr, 0, 0, &val, 1);
|
|
i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_DATALEN);
|
|
|
|
puts ("Keys:");
|
|
for (i = 0; i < KEYBD_DATALEN; ++i) {
|
|
sprintf (keybd_env + i + i, "%02X", kbd_data[i]);
|
|
printf (" %02x", kbd_data[i]);
|
|
}
|
|
putc ('\n');
|
|
setenv ("keybd", keybd_env);
|
|
return 0;
|
|
}
|
|
|
|
U_BOOT_CMD(
|
|
kbd, 1, 1, do_kbd,
|
|
"read keyboard status",
|
|
""
|
|
);
|
|
|
|
/* Read and set LSB switch */
|
|
#define CONFIG_SYS_PC_TXD1_ENA 0x0008 /* PC.12 */
|
|
|
|
/***********************************************************************
|
|
F* Function: int do_lsb (cmd_tbl_t *cmdtp, int flag,
|
|
F* int argc, char * const argv[]) P*A*Z*
|
|
*
|
|
P* Parameters: cmd_tbl_t *cmdtp
|
|
P* - Pointer to our command table entry
|
|
P* int flag
|
|
P* - If the CMD_FLAG_REPEAT bit is set, then this call is
|
|
P* a repetition
|
|
P* int argc
|
|
P* - Argument count
|
|
P* char * const argv[]
|
|
P* - Array of the actual arguments
|
|
P*
|
|
P* Returnvalue: int
|
|
P* - 0 The command was handled successfully
|
|
P* 1 An error occurred
|
|
*
|
|
Z* Intention: Implement the "lsb [on|off]" commands.
|
|
Z* The lsb is switched according to the first parameter by
|
|
Z* by signaling the PIC I/O expander.
|
|
Z* Called with no arguments, the current setting is
|
|
Z* printed.
|
|
*
|
|
D* Design: wd@denx.de
|
|
C* Coding: wd@denx.de
|
|
V* Verification: dzu@denx.de
|
|
***********************************************************************/
|
|
int do_lsb (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
|
{
|
|
uchar val;
|
|
immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
|
|
|
|
switch (argc) {
|
|
case 1: /* lsb - print setting */
|
|
val = pic_read (0x60);
|
|
printf ("LSB is o%s\n", (val & 0x20) ? "n" : "ff");
|
|
return 0;
|
|
case 2: /* lsb on or lsb off - set switch */
|
|
val = pic_read (0x60);
|
|
|
|
if (strcmp (argv[1], "on") == 0) {
|
|
val |= 0x20;
|
|
immr->im_ioport.iop_pcpar &= ~(CONFIG_SYS_PC_TXD1_ENA);
|
|
immr->im_ioport.iop_pcdat |= CONFIG_SYS_PC_TXD1_ENA;
|
|
immr->im_ioport.iop_pcdir |= CONFIG_SYS_PC_TXD1_ENA;
|
|
} else if (strcmp (argv[1], "off") == 0) {
|
|
val &= ~0x20;
|
|
immr->im_ioport.iop_pcpar &= ~(CONFIG_SYS_PC_TXD1_ENA);
|
|
immr->im_ioport.iop_pcdat &= ~(CONFIG_SYS_PC_TXD1_ENA);
|
|
immr->im_ioport.iop_pcdir |= CONFIG_SYS_PC_TXD1_ENA;
|
|
} else {
|
|
break;
|
|
}
|
|
pic_write (0x60, val);
|
|
return 0;
|
|
default:
|
|
break;
|
|
}
|
|
return cmd_usage(cmdtp);
|
|
}
|
|
|
|
U_BOOT_CMD(
|
|
lsb, 2, 1, do_lsb,
|
|
"check and set LSB switch",
|
|
"on - switch LSB on\n"
|
|
"lsb off - switch LSB off\n"
|
|
"lsb - print current setting"
|
|
);
|
|
|
|
#endif
|
|
|
|
/*----------------------------- Utilities -----------------------------*/
|
|
/***********************************************************************
|
|
F* Function: uchar pic_read (uchar reg) P*A*Z*
|
|
*
|
|
P* Parameters: uchar reg
|
|
P* - Register to read
|
|
P*
|
|
P* Returnvalue: uchar
|
|
P* - Value read from register
|
|
*
|
|
Z* Intention: Read a register from the PIC I/O expander.
|
|
*
|
|
D* Design: wd@denx.de
|
|
C* Coding: wd@denx.de
|
|
V* Verification: dzu@denx.de
|
|
***********************************************************************/
|
|
uchar pic_read (uchar reg)
|
|
{
|
|
return (i2c_reg_read (CONFIG_SYS_I2C_PICIO_ADDR, reg));
|
|
}
|
|
|
|
/***********************************************************************
|
|
F* Function: void pic_write (uchar reg, uchar val) P*A*Z*
|
|
*
|
|
P* Parameters: uchar reg
|
|
P* - Register to read
|
|
P* uchar val
|
|
P* - Value to write
|
|
P*
|
|
P* Returnvalue: none
|
|
*
|
|
Z* Intention: Write to a register on the PIC I/O expander.
|
|
*
|
|
D* Design: wd@denx.de
|
|
C* Coding: wd@denx.de
|
|
V* Verification: dzu@denx.de
|
|
***********************************************************************/
|
|
void pic_write (uchar reg, uchar val)
|
|
{
|
|
i2c_reg_write (CONFIG_SYS_I2C_PICIO_ADDR, reg, val);
|
|
}
|
|
|
|
/*---------------------- Board Control Functions ----------------------*/
|
|
/***********************************************************************
|
|
F* Function: void board_poweroff (void) P*A*Z*
|
|
*
|
|
P* Parameters: none
|
|
P*
|
|
P* Returnvalue: none
|
|
*
|
|
Z* Intention: Turn off the battery power and loop endless, so this
|
|
Z* should better be the last function you call...
|
|
*
|
|
D* Design: wd@denx.de
|
|
C* Coding: wd@denx.de
|
|
V* Verification: dzu@denx.de
|
|
***********************************************************************/
|
|
void board_poweroff (void)
|
|
{
|
|
/* Turn battery off */
|
|
((volatile immap_t *)CONFIG_SYS_IMMR)->im_ioport.iop_pcdat &= ~(1 << (31 - 13));
|
|
|
|
while (1);
|
|
}
|
|
|
|
#ifdef CONFIG_MODEM_SUPPORT
|
|
static int key_pressed(void)
|
|
{
|
|
uchar kbd_data[KEYBD_DATALEN];
|
|
uchar val;
|
|
|
|
/* Read keys */
|
|
val = KEYBD_CMD_READ_KEYS;
|
|
i2c_write (kbd_addr, 0, 0, &val, 1);
|
|
i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_DATALEN);
|
|
|
|
return (compare_magic(kbd_data, (uchar *)CONFIG_MODEM_KEY_MAGIC) == 0);
|
|
}
|
|
#endif /* CONFIG_MODEM_SUPPORT */
|
|
|
|
#ifdef CONFIG_POST
|
|
/*
|
|
* Returns 1 if keys pressed to start the power-on long-running tests
|
|
* Called from board_init_f().
|
|
*/
|
|
int post_hotkeys_pressed(void)
|
|
{
|
|
uchar kbd_data[KEYBD_DATALEN];
|
|
uchar val;
|
|
|
|
/* Read keys */
|
|
val = KEYBD_CMD_READ_KEYS;
|
|
i2c_write (kbd_addr, 0, 0, &val, 1);
|
|
i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_DATALEN);
|
|
|
|
return (compare_magic(kbd_data, (uchar *)CONFIG_POST_KEY_MAGIC) == 0);
|
|
}
|
|
#endif
|