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https://github.com/brain-hackers/u-boot-brain
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![Stefano Babic](/assets/img/avatar_default.png)
The esdhc controller in the mx51 processor is quite the same as the one in some powerpc processors (MPC83xx, MPC85xx). This patches adapts the driver to support the arm mx51. Signed-off-by: Stefano Babic <sbabic@denx.de>
453 lines
12 KiB
C
453 lines
12 KiB
C
/*
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* (C) Copyright 2002-2006
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Marius Groeger <mgroeger@sysgo.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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/*
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* To match the U-Boot user interface on ARM platforms to the U-Boot
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* standard (as on PPC platforms), some messages with debug character
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* are removed from the default U-Boot build.
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*
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* Define DEBUG here if you want additional info as shown below
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* printed upon startup:
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*
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* U-Boot code: 00F00000 -> 00F3C774 BSS: -> 00FC3274
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* IRQ Stack: 00ebff7c
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* FIQ Stack: 00ebef7c
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*/
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#include <common.h>
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#include <command.h>
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#include <malloc.h>
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#include <stdio_dev.h>
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#include <timestamp.h>
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#include <version.h>
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#include <net.h>
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#include <serial.h>
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#include <nand.h>
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#include <onenand_uboot.h>
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#include <mmc.h>
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#ifdef CONFIG_BITBANGMII
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#include <miiphy.h>
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#endif
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#ifdef CONFIG_DRIVER_SMC91111
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#include "../drivers/net/smc91111.h"
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#endif
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#ifdef CONFIG_DRIVER_LAN91C96
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#include "../drivers/net/lan91c96.h"
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#endif
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DECLARE_GLOBAL_DATA_PTR;
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ulong monitor_flash_len;
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#ifdef CONFIG_HAS_DATAFLASH
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extern int AT91F_DataflashInit(void);
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extern void dataflash_print_info(void);
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#endif
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#ifndef CONFIG_IDENT_STRING
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#define CONFIG_IDENT_STRING ""
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#endif
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const char version_string[] =
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U_BOOT_VERSION" (" U_BOOT_DATE " - " U_BOOT_TIME ")"CONFIG_IDENT_STRING;
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#ifdef CONFIG_DRIVER_RTL8019
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extern void rtl8019_get_enetaddr (uchar * addr);
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#endif
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#if defined(CONFIG_HARD_I2C) || \
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defined(CONFIG_SOFT_I2C)
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#include <i2c.h>
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#endif
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/************************************************************************
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* Coloured LED functionality
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************************************************************************
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* May be supplied by boards if desired
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*/
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void inline __coloured_LED_init (void) {}
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void coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init")));
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void inline __red_LED_on (void) {}
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void red_LED_on (void) __attribute__((weak, alias("__red_LED_on")));
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void inline __red_LED_off(void) {}
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void red_LED_off(void) __attribute__((weak, alias("__red_LED_off")));
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void inline __green_LED_on(void) {}
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void green_LED_on(void) __attribute__((weak, alias("__green_LED_on")));
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void inline __green_LED_off(void) {}
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void green_LED_off(void) __attribute__((weak, alias("__green_LED_off")));
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void inline __yellow_LED_on(void) {}
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void yellow_LED_on(void) __attribute__((weak, alias("__yellow_LED_on")));
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void inline __yellow_LED_off(void) {}
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void yellow_LED_off(void) __attribute__((weak, alias("__yellow_LED_off")));
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void inline __blue_LED_on(void) {}
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void blue_LED_on(void) __attribute__((weak, alias("__blue_LED_on")));
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void inline __blue_LED_off(void) {}
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void blue_LED_off(void) __attribute__((weak, alias("__blue_LED_off")));
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/************************************************************************
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* Init Utilities *
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************************************************************************
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* Some of this code should be moved into the core functions,
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* or dropped completely,
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* but let's get it working (again) first...
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*/
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#if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
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#define CONFIG_BAUDRATE 115200
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#endif
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static int init_baudrate (void)
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{
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char tmp[64]; /* long enough for environment variables */
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int i = getenv_r ("baudrate", tmp, sizeof (tmp));
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gd->bd->bi_baudrate = gd->baudrate = (i > 0)
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? (int) simple_strtoul (tmp, NULL, 10)
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: CONFIG_BAUDRATE;
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return (0);
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}
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static int display_banner (void)
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{
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printf ("\n\n%s\n\n", version_string);
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debug ("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
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_armboot_start, _bss_start, _bss_end);
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#ifdef CONFIG_MODEM_SUPPORT
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debug ("Modem Support enabled\n");
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#endif
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#ifdef CONFIG_USE_IRQ
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debug ("IRQ Stack: %08lx\n", IRQ_STACK_START);
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debug ("FIQ Stack: %08lx\n", FIQ_STACK_START);
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#endif
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return (0);
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}
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/*
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* WARNING: this code looks "cleaner" than the PowerPC version, but
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* has the disadvantage that you either get nothing, or everything.
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* On PowerPC, you might see "DRAM: " before the system hangs - which
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* gives a simple yet clear indication which part of the
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* initialization if failing.
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*/
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static int display_dram_config (void)
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{
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int i;
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#ifdef DEBUG
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puts ("RAM Configuration:\n");
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for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
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printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
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print_size (gd->bd->bi_dram[i].size, "\n");
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}
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#else
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ulong size = 0;
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for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
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size += gd->bd->bi_dram[i].size;
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}
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puts("DRAM: ");
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print_size(size, "\n");
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#endif
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return (0);
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}
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#ifndef CONFIG_SYS_NO_FLASH
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static void display_flash_config (ulong size)
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{
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puts ("Flash: ");
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print_size (size, "\n");
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}
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#endif /* CONFIG_SYS_NO_FLASH */
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#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
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static int init_func_i2c (void)
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{
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puts ("I2C: ");
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i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
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puts ("ready\n");
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return (0);
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}
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#endif
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#if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
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#include <pci.h>
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static int arm_pci_init(void)
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{
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pci_init();
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return 0;
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}
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#endif /* CONFIG_CMD_PCI || CONFIG_PCI */
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/*
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* Breathe some life into the board...
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*
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* Initialize a serial port as console, and carry out some hardware
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* tests.
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*
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* The first part of initialization is running from Flash memory;
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* its main purpose is to initialize the RAM so that we
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* can relocate the monitor code to RAM.
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*/
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/*
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* All attempts to come up with a "common" initialization sequence
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* that works for all boards and architectures failed: some of the
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* requirements are just _too_ different. To get rid of the resulting
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* mess of board dependent #ifdef'ed code we now make the whole
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* initialization sequence configurable to the user.
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*
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* The requirements for any new initalization function is simple: it
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* receives a pointer to the "global data" structure as it's only
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* argument, and returns an integer return code, where 0 means
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* "continue" and != 0 means "fatal error, hang the system".
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*/
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typedef int (init_fnc_t) (void);
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int print_cpuinfo (void);
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init_fnc_t *init_sequence[] = {
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#if defined(CONFIG_ARCH_CPU_INIT)
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arch_cpu_init, /* basic arch cpu dependent setup */
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#endif
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board_init, /* basic board dependent setup */
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#if defined(CONFIG_USE_IRQ)
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interrupt_init, /* set up exceptions */
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#endif
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timer_init, /* initialize timer */
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#ifdef CONFIG_FSL_ESDHC
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get_clocks,
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#endif
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env_init, /* initialize environment */
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init_baudrate, /* initialze baudrate settings */
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serial_init, /* serial communications setup */
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console_init_f, /* stage 1 init of console */
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display_banner, /* say that we are here */
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#if defined(CONFIG_DISPLAY_CPUINFO)
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print_cpuinfo, /* display cpu info (and speed) */
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#endif
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#if defined(CONFIG_DISPLAY_BOARDINFO)
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checkboard, /* display board info */
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#endif
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#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
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init_func_i2c,
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#endif
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dram_init, /* configure available RAM banks */
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#if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
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arm_pci_init,
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#endif
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display_dram_config,
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NULL,
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};
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void start_armboot (void)
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{
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init_fnc_t **init_fnc_ptr;
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char *s;
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#if defined(CONFIG_VFD) || defined(CONFIG_LCD)
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unsigned long addr;
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#endif
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/* Pointer is writable since we allocated a register for it */
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gd = (gd_t*)(_armboot_start - CONFIG_SYS_MALLOC_LEN - sizeof(gd_t));
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/* compiler optimization barrier needed for GCC >= 3.4 */
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__asm__ __volatile__("": : :"memory");
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memset ((void*)gd, 0, sizeof (gd_t));
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gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
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memset (gd->bd, 0, sizeof (bd_t));
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gd->flags |= GD_FLG_RELOC;
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monitor_flash_len = _bss_start - _armboot_start;
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for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
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if ((*init_fnc_ptr)() != 0) {
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hang ();
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}
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}
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/* armboot_start is defined in the board-specific linker script */
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mem_malloc_init (_armboot_start - CONFIG_SYS_MALLOC_LEN,
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CONFIG_SYS_MALLOC_LEN);
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#ifndef CONFIG_SYS_NO_FLASH
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/* configure available FLASH banks */
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display_flash_config (flash_init ());
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#endif /* CONFIG_SYS_NO_FLASH */
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#ifdef CONFIG_VFD
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# ifndef PAGE_SIZE
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# define PAGE_SIZE 4096
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# endif
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/*
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* reserve memory for VFD display (always full pages)
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*/
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/* bss_end is defined in the board-specific linker script */
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addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
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vfd_setmem (addr);
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gd->fb_base = addr;
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#endif /* CONFIG_VFD */
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#ifdef CONFIG_LCD
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/* board init may have inited fb_base */
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if (!gd->fb_base) {
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# ifndef PAGE_SIZE
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# define PAGE_SIZE 4096
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# endif
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/*
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* reserve memory for LCD display (always full pages)
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*/
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/* bss_end is defined in the board-specific linker script */
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addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
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lcd_setmem (addr);
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gd->fb_base = addr;
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}
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#endif /* CONFIG_LCD */
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#if defined(CONFIG_CMD_NAND)
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puts ("NAND: ");
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nand_init(); /* go init the NAND */
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#endif
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#if defined(CONFIG_CMD_ONENAND)
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onenand_init();
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#endif
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#ifdef CONFIG_HAS_DATAFLASH
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AT91F_DataflashInit();
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dataflash_print_info();
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#endif
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/* initialize environment */
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env_relocate ();
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#ifdef CONFIG_VFD
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/* must do this after the framebuffer is allocated */
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drv_vfd_init();
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#endif /* CONFIG_VFD */
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#ifdef CONFIG_SERIAL_MULTI
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serial_initialize();
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#endif
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/* IP Address */
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gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
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stdio_init (); /* get the devices list going. */
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jumptable_init ();
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#if defined(CONFIG_API)
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/* Initialize API */
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api_init ();
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#endif
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console_init_r (); /* fully init console as a device */
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#if defined(CONFIG_ARCH_MISC_INIT)
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/* miscellaneous arch dependent initialisations */
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arch_misc_init ();
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#endif
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#if defined(CONFIG_MISC_INIT_R)
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/* miscellaneous platform dependent initialisations */
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misc_init_r ();
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#endif
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/* enable exceptions */
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enable_interrupts ();
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/* Perform network card initialisation if necessary */
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#ifdef CONFIG_DRIVER_TI_EMAC
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/* XXX: this needs to be moved to board init */
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extern void davinci_eth_set_mac_addr (const u_int8_t *addr);
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if (getenv ("ethaddr")) {
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uchar enetaddr[6];
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eth_getenv_enetaddr("ethaddr", enetaddr);
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davinci_eth_set_mac_addr(enetaddr);
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}
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#endif
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#if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
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/* XXX: this needs to be moved to board init */
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if (getenv ("ethaddr")) {
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uchar enetaddr[6];
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eth_getenv_enetaddr("ethaddr", enetaddr);
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smc_set_mac_addr(enetaddr);
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}
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#endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
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/* Initialize from environment */
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if ((s = getenv ("loadaddr")) != NULL) {
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load_addr = simple_strtoul (s, NULL, 16);
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}
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#if defined(CONFIG_CMD_NET)
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if ((s = getenv ("bootfile")) != NULL) {
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copy_filename (BootFile, s, sizeof (BootFile));
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}
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#endif
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#ifdef BOARD_LATE_INIT
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board_late_init ();
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#endif
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#ifdef CONFIG_GENERIC_MMC
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puts ("MMC: ");
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mmc_initialize (gd->bd);
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#endif
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#ifdef CONFIG_BITBANGMII
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bb_miiphy_init();
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#endif
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#if defined(CONFIG_CMD_NET)
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#if defined(CONFIG_NET_MULTI)
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puts ("Net: ");
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#endif
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eth_initialize(gd->bd);
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#if defined(CONFIG_RESET_PHY_R)
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debug ("Reset Ethernet PHY\n");
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reset_phy();
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#endif
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#endif
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/* main_loop() can return to retry autoboot, if so just run it again. */
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for (;;) {
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main_loop ();
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}
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/* NOTREACHED - no way out of command loop except booting */
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}
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void hang (void)
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{
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puts ("### ERROR ### Please RESET the board ###\n");
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for (;;);
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}
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