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![Simon Glass](/assets/img/avatar_default.png)
We are now using an env_ prefix for environment functions. Rename these two functions for consistency. Also add function comments in common.h. Quite a few places use getenv() in a condition context, provoking a warning from checkpatch. These are fixed up in this patch also. Suggested-by: Wolfgang Denk <wd@denx.de> Signed-off-by: Simon Glass <sjg@chromium.org>
677 lines
17 KiB
C
677 lines
17 KiB
C
/*
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* (C) Copyright 2012
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* Ивайло Димитров <freemangordon@abv.bg>
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*
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* (C) Copyright 2011-2012
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* Pali Rohár <pali.rohar@gmail.com>
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*
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* (C) Copyright 2010
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* Alistair Buxton <a.j.buxton@gmail.com>
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*
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* Derived from Beagle Board and 3430 SDP code:
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* (C) Copyright 2004-2008
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* Texas Instruments, <www.ti.com>
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*
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* Author :
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* Sunil Kumar <sunilsaini05@gmail.com>
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* Shashi Ranjan <shashiranjanmca05@gmail.com>
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*
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* Richard Woodruff <r-woodruff2@ti.com>
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* Syed Mohammed Khasim <khasim@ti.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <watchdog.h>
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#include <malloc.h>
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#include <twl4030.h>
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#include <i2c.h>
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#include <video_fb.h>
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#include <asm/io.h>
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#include <asm/setup.h>
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#include <asm/bitops.h>
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#include <asm/mach-types.h>
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#include <asm/arch/mux.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/arch/mmc_host_def.h>
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#include "rx51.h"
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#include "tag_omap.h"
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DECLARE_GLOBAL_DATA_PTR;
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GraphicDevice gdev;
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const omap3_sysinfo sysinfo = {
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DDR_STACKED,
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"Nokia RX-51",
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"OneNAND"
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};
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/* This structure contains default omap tags needed for booting Maemo 5 */
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static struct tag_omap omap[] = {
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OMAP_TAG_UART_CONFIG(0x04),
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OMAP_TAG_SERIAL_CONSOLE_CONFIG(0x03, 0x01C200),
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OMAP_TAG_LCD_CONFIG("acx565akm", "internal", 90, 0x18),
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OMAP_TAG_GPIO_SWITCH_CONFIG("cam_focus", 0x44, 0x1, 0x2, 0x0),
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OMAP_TAG_GPIO_SWITCH_CONFIG("cam_launch", 0x45, 0x1, 0x2, 0x0),
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OMAP_TAG_GPIO_SWITCH_CONFIG("cam_shutter", 0x6e, 0x1, 0x0, 0x0),
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OMAP_TAG_GPIO_SWITCH_CONFIG("cmt_apeslpx", 0x46, 0x2, 0x2, 0x0),
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OMAP_TAG_GPIO_SWITCH_CONFIG("cmt_bsi", 0x9d, 0x2, 0x2, 0x0),
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OMAP_TAG_GPIO_SWITCH_CONFIG("cmt_en", 0x4a, 0x2, 0x2, 0x0),
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OMAP_TAG_GPIO_SWITCH_CONFIG("cmt_rst", 0x4b, 0x6, 0x2, 0x0),
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OMAP_TAG_GPIO_SWITCH_CONFIG("cmt_rst_rq", 0x49, 0x6, 0x2, 0x0),
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OMAP_TAG_GPIO_SWITCH_CONFIG("cmt_wddis", 0x0d, 0x2, 0x2, 0x0),
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OMAP_TAG_GPIO_SWITCH_CONFIG("headphone", 0xb1, 0x1, 0x1, 0x0),
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OMAP_TAG_GPIO_SWITCH_CONFIG("kb_lock", 0x71, 0x1, 0x0, 0x0),
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OMAP_TAG_GPIO_SWITCH_CONFIG("proximity", 0x59, 0x0, 0x0, 0x0),
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OMAP_TAG_GPIO_SWITCH_CONFIG("sleep_ind", 0xa2, 0x2, 0x2, 0x0),
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OMAP_TAG_GPIO_SWITCH_CONFIG("slide", GPIO_SLIDE, 0x0, 0x0, 0x0),
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OMAP_TAG_WLAN_CX3110X_CONFIG(0x25, 0xff, 87, 42, -1),
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OMAP_TAG_PARTITION_CONFIG(PART1_NAME, PART1_SIZE * PART1_MULL,
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PART1_OFFS, PART1_MASK),
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OMAP_TAG_PARTITION_CONFIG(PART2_NAME, PART2_SIZE * PART2_MULL,
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PART2_OFFS, PART2_MASK),
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OMAP_TAG_PARTITION_CONFIG(PART3_NAME, PART3_SIZE * PART3_MULL,
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PART3_OFFS, PART3_MASK),
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OMAP_TAG_PARTITION_CONFIG(PART4_NAME, PART4_SIZE * PART4_MULL,
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PART4_OFFS, PART4_MASK),
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OMAP_TAG_PARTITION_CONFIG(PART5_NAME, PART5_SIZE * PART5_MULL,
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PART5_OFFS, PART5_MASK),
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OMAP_TAG_PARTITION_CONFIG(PART6_NAME, PART6_SIZE * PART6_MULL,
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PART6_OFFS, PART6_MASK),
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OMAP_TAG_BOOT_REASON_CONFIG("pwr_key"),
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OMAP_TAG_VERSION_STR_CONFIG("product", "RX-51"),
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OMAP_TAG_VERSION_STR_CONFIG("hw-build", "2101"),
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OMAP_TAG_VERSION_STR_CONFIG("nolo", "1.4.14"),
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OMAP_TAG_VERSION_STR_CONFIG("boot-mode", "normal"),
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{ }
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};
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static char *boot_reason_ptr;
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static char *hw_build_ptr;
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static char *nolo_version_ptr;
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static char *boot_mode_ptr;
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/*
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* Routine: init_omap_tags
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* Description: Initialize pointers to values in tag_omap
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*/
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static void init_omap_tags(void)
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{
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char *component;
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char *version;
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int i = 0;
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while (omap[i].hdr.tag) {
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switch (omap[i].hdr.tag) {
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case OMAP_TAG_BOOT_REASON:
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boot_reason_ptr = omap[i].u.boot_reason.reason_str;
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break;
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case OMAP_TAG_VERSION_STR:
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component = omap[i].u.version.component;
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version = omap[i].u.version.version;
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if (strcmp(component, "hw-build") == 0)
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hw_build_ptr = version;
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else if (strcmp(component, "nolo") == 0)
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nolo_version_ptr = version;
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else if (strcmp(component, "boot-mode") == 0)
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boot_mode_ptr = version;
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break;
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default:
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break;
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}
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i++;
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}
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}
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static void reuse_omap_atags(struct tag_omap *t)
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{
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char *component;
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char *version;
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while (t->hdr.tag) {
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switch (t->hdr.tag) {
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case OMAP_TAG_BOOT_REASON:
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memset(boot_reason_ptr, 0, 12);
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strcpy(boot_reason_ptr, t->u.boot_reason.reason_str);
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break;
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case OMAP_TAG_VERSION_STR:
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component = t->u.version.component;
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version = t->u.version.version;
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if (strcmp(component, "hw-build") == 0) {
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memset(hw_build_ptr, 0, 12);
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strcpy(hw_build_ptr, version);
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} else if (strcmp(component, "nolo") == 0) {
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memset(nolo_version_ptr, 0, 12);
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strcpy(nolo_version_ptr, version);
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} else if (strcmp(component, "boot-mode") == 0) {
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memset(boot_mode_ptr, 0, 12);
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strcpy(boot_mode_ptr, version);
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}
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break;
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default:
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break;
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}
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t = tag_omap_next(t);
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}
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}
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/*
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* Routine: reuse_atags
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* Description: Reuse atags from previous bootloader.
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* Reuse only only HW build, boot reason, boot mode and nolo
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*/
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static void reuse_atags(void)
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{
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struct tag *t = (struct tag *)gd->bd->bi_boot_params;
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/* First tag must be ATAG_CORE */
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if (t->hdr.tag != ATAG_CORE)
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return;
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if (!boot_reason_ptr || !hw_build_ptr)
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return;
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/* Last tag must be ATAG_NONE */
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while (t->hdr.tag != ATAG_NONE) {
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switch (t->hdr.tag) {
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case ATAG_REVISION:
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memset(hw_build_ptr, 0, 12);
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sprintf(hw_build_ptr, "%x", t->u.revision.rev);
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break;
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case ATAG_BOARD:
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reuse_omap_atags((struct tag_omap *)&t->u);
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break;
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default:
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break;
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}
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t = tag_next(t);
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}
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}
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/*
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* Routine: board_init
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* Description: Early hardware init.
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*/
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int board_init(void)
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{
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/* in SRAM or SDRAM, finish GPMC */
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gpmc_init();
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/* boot param addr */
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gd->bd->bi_boot_params = OMAP34XX_SDRC_CS0 + 0x100;
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return 0;
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}
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/*
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* Routine: get_board_revision
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* Description: Return board revision.
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*/
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u32 get_board_rev(void)
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{
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return simple_strtol(hw_build_ptr, NULL, 16);
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}
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/*
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* Routine: setup_board_tags
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* Description: Append board specific boot tags.
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*/
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void setup_board_tags(struct tag **in_params)
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{
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int setup_console_atag;
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char *setup_boot_reason_atag;
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char *setup_boot_mode_atag;
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char *str;
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int i;
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int size;
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int total_size;
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struct tag *params;
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struct tag_omap *t;
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params = (struct tag *)gd->bd->bi_boot_params;
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params->u.core.flags = 0x0;
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params->u.core.pagesize = 0x1000;
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params->u.core.rootdev = 0x0;
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/* append omap atag only if env setup_omap_atag is set to 1 */
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str = env_get("setup_omap_atag");
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if (!str || str[0] != '1')
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return;
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str = env_get("setup_console_atag");
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if (str && str[0] == '1')
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setup_console_atag = 1;
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else
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setup_console_atag = 0;
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setup_boot_reason_atag = env_get("setup_boot_reason_atag");
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setup_boot_mode_atag = env_get("setup_boot_mode_atag");
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params = *in_params;
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t = (struct tag_omap *)¶ms->u;
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total_size = sizeof(struct tag_header);
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for (i = 0; omap[i].hdr.tag; i++) {
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/* skip serial console tag */
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if (!setup_console_atag &&
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omap[i].hdr.tag == OMAP_TAG_SERIAL_CONSOLE)
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continue;
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size = omap[i].hdr.size + sizeof(struct tag_omap_header);
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memcpy(t, &omap[i], size);
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/* set uart tag to 0 - disable serial console */
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if (!setup_console_atag && omap[i].hdr.tag == OMAP_TAG_UART)
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t->u.uart.enabled_uarts = 0;
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/* change boot reason */
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if (setup_boot_reason_atag &&
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omap[i].hdr.tag == OMAP_TAG_BOOT_REASON) {
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memset(t->u.boot_reason.reason_str, 0, 12);
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strcpy(t->u.boot_reason.reason_str,
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setup_boot_reason_atag);
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}
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/* change boot mode */
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if (setup_boot_mode_atag &&
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omap[i].hdr.tag == OMAP_TAG_VERSION_STR &&
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strcmp(omap[i].u.version.component, "boot-mode") == 0) {
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memset(t->u.version.version, 0, 12);
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strcpy(t->u.version.version, setup_boot_mode_atag);
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}
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total_size += size;
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t = tag_omap_next(t);
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}
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params->hdr.tag = ATAG_BOARD;
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params->hdr.size = total_size >> 2;
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params = tag_next(params);
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*in_params = params;
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}
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/*
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* Routine: video_hw_init
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* Description: Set up the GraphicDevice depending on sys_boot.
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*/
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void *video_hw_init(void)
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{
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/* fill in Graphic Device */
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gdev.frameAdrs = 0x8f9c0000;
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gdev.winSizeX = 800;
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gdev.winSizeY = 480;
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gdev.gdfBytesPP = 2;
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gdev.gdfIndex = GDF_16BIT_565RGB;
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memset((void *)gdev.frameAdrs, 0, 0xbb800);
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return (void *) &gdev;
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}
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/*
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* Routine: twl4030_regulator_set_mode
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* Description: Set twl4030 regulator mode over i2c powerbus.
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*/
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static void twl4030_regulator_set_mode(u8 id, u8 mode)
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{
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u16 msg = MSG_SINGULAR(DEV_GRP_P1, id, mode);
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
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TWL4030_PM_MASTER_PB_WORD_MSB, msg >> 8);
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
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TWL4030_PM_MASTER_PB_WORD_LSB, msg & 0xff);
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}
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static void omap3_emu_romcode_call(u32 service_id, u32 *parameters)
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{
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u32 i, num_params = *parameters;
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u32 *sram_scratch_space = (u32 *)OMAP3_PUBLIC_SRAM_SCRATCH_AREA;
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/*
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* copy the parameters to an un-cached area to avoid coherency
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* issues
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*/
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for (i = 0; i < num_params; i++) {
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__raw_writel(*parameters, sram_scratch_space);
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parameters++;
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sram_scratch_space++;
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}
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/* Now make the PPA call */
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do_omap3_emu_romcode_call(service_id, OMAP3_PUBLIC_SRAM_SCRATCH_AREA);
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}
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void omap3_set_aux_cr_secure(u32 acr)
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{
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struct emu_hal_params_rx51 emu_romcode_params = { 0, };
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emu_romcode_params.num_params = 2;
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emu_romcode_params.param1 = acr;
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omap3_emu_romcode_call(OMAP3_EMU_HAL_API_WRITE_ACR,
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(u32 *)&emu_romcode_params);
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}
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/*
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* Routine: omap3_update_aux_cr_secure_rx51
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* Description: Modify the contents Auxiliary Control Register.
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* Parameters:
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* set_bits - bits to set in ACR
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* clr_bits - bits to clear in ACR
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*/
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static void omap3_update_aux_cr_secure_rx51(u32 set_bits, u32 clear_bits)
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{
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u32 acr;
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/* Read ACR */
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asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r" (acr));
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acr &= ~clear_bits;
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acr |= set_bits;
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omap3_set_aux_cr_secure(acr);
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}
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/*
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* Routine: misc_init_r
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* Description: Configure board specific parts.
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*/
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int misc_init_r(void)
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{
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char buf[12];
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u8 state;
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/* reset lp5523 led */
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i2c_set_bus_num(1);
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state = 0xff;
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i2c_write(0x32, 0x3d, 1, &state, 1);
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i2c_set_bus_num(0);
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/* initialize twl4030 power managment */
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twl4030_power_init();
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/* set VSIM to 1.8V */
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twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VSIM_DEDICATED,
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TWL4030_PM_RECEIVER_VSIM_VSEL_18,
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TWL4030_PM_RECEIVER_VSIM_DEV_GRP,
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TWL4030_PM_RECEIVER_DEV_GRP_P1);
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/* store I2C access state */
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twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER, TWL4030_PM_MASTER_PB_CFG,
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&state);
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/* enable I2C access to powerbus (needed for twl4030 regulator) */
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, TWL4030_PM_MASTER_PB_CFG,
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0x02);
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/* set VAUX3, VSIM and VMMC1 state to active - enable eMMC memory */
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twl4030_regulator_set_mode(RES_VAUX3, RES_STATE_ACTIVE);
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twl4030_regulator_set_mode(RES_VSIM, RES_STATE_ACTIVE);
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twl4030_regulator_set_mode(RES_VMMC1, RES_STATE_ACTIVE);
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/* restore I2C access state */
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, TWL4030_PM_MASTER_PB_CFG,
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state);
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/* set env variable attkernaddr for relocated kernel */
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sprintf(buf, "%#x", KERNEL_ADDRESS);
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env_set("attkernaddr", buf);
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/* initialize omap tags */
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init_omap_tags();
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/* reuse atags from previous bootloader */
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reuse_atags();
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omap_die_id_display();
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print_cpuinfo();
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/*
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* Cortex-A8(r1p0..r1p2) errata 430973 workaround
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* Set IBE bit in Auxiliary Control Register
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*
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* Call this routine only on real secure device
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* Qemu does not implement secure PPA and crash
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*/
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if (get_device_type() == HS_DEVICE)
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omap3_update_aux_cr_secure_rx51(1 << 6, 0);
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return 0;
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}
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/*
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* Routine: set_muxconf_regs
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* Description: Setting up the configuration Mux registers specific to the
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* hardware. Many pins need to be moved from protect to primary
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* mode.
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*/
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void set_muxconf_regs(void)
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{
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MUX_RX51();
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}
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static unsigned long int twl_wd_time; /* last time of watchdog reset */
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static unsigned long int twl_i2c_lock;
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/*
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* Routine: hw_watchdog_reset
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* Description: Reset timeout of twl4030 watchdog.
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*/
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void hw_watchdog_reset(void)
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{
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u8 timeout = 0;
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/* do not reset watchdog too often - max every 4s */
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if (get_timer(twl_wd_time) < 4 * CONFIG_SYS_HZ)
|
|
return;
|
|
|
|
/* localy lock twl4030 i2c bus */
|
|
if (test_and_set_bit(0, &twl_i2c_lock))
|
|
return;
|
|
|
|
/* read actual watchdog timeout */
|
|
twl4030_i2c_read_u8(TWL4030_CHIP_PM_RECEIVER,
|
|
TWL4030_PM_RECEIVER_WATCHDOG_CFG, &timeout);
|
|
|
|
/* timeout 0 means watchdog is disabled */
|
|
/* reset watchdog timeout to 31s (maximum) */
|
|
if (timeout != 0)
|
|
twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
|
|
TWL4030_PM_RECEIVER_WATCHDOG_CFG, 31);
|
|
|
|
/* store last watchdog reset time */
|
|
twl_wd_time = get_timer(0);
|
|
|
|
/* localy unlock twl4030 i2c bus */
|
|
test_and_clear_bit(0, &twl_i2c_lock);
|
|
}
|
|
|
|
/*
|
|
* TWL4030 keypad handler for cfb_console
|
|
*/
|
|
|
|
static const char keymap[] = {
|
|
/* normal */
|
|
'q', 'o', 'p', ',', '\b', 0, 'a', 's',
|
|
'w', 'd', 'f', 'g', 'h', 'j', 'k', 'l',
|
|
'e', '.', 0, '\r', 0, 'z', 'x', 'c',
|
|
'r', 'v', 'b', 'n', 'm', ' ', ' ', 0,
|
|
't', 0, 0, 0, 0, 0, 0, 0,
|
|
'y', 0, 0, 0, 0, 0, 0, 0,
|
|
'u', 0, 0, 0, 0, 0, 0, 0,
|
|
'i', 5, 6, 0, 0, 0, 0, 0,
|
|
/* fn */
|
|
'1', '9', '0', '=', '\b', 0, '*', '+',
|
|
'2', '#', '-', '_', '(', ')', '&', '!',
|
|
'3', '?', '^', '\r', 0, 156, '$', 238,
|
|
'4', '/', '\\', '"', '\'', '@', 0, '<',
|
|
'5', '|', '>', 0, 0, 0, 0, 0,
|
|
'6', 0, 0, 0, 0, 0, 0, 0,
|
|
'7', 0, 0, 0, 0, 0, 0, 0,
|
|
'8', 16, 17, 0, 0, 0, 0, 0,
|
|
};
|
|
|
|
static u8 keys[8];
|
|
static u8 old_keys[8] = {0, 0, 0, 0, 0, 0, 0, 0};
|
|
#define KEYBUF_SIZE 32
|
|
static u8 keybuf[KEYBUF_SIZE];
|
|
static u8 keybuf_head;
|
|
static u8 keybuf_tail;
|
|
|
|
/*
|
|
* Routine: rx51_kp_init
|
|
* Description: Initialize HW keyboard.
|
|
*/
|
|
int rx51_kp_init(void)
|
|
{
|
|
int ret = 0;
|
|
u8 ctrl;
|
|
ret = twl4030_i2c_read_u8(TWL4030_CHIP_KEYPAD,
|
|
TWL4030_KEYPAD_KEYP_CTRL_REG, &ctrl);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* turn on keyboard and use hardware scanning */
|
|
ctrl |= TWL4030_KEYPAD_CTRL_KBD_ON;
|
|
ctrl |= TWL4030_KEYPAD_CTRL_SOFT_NRST;
|
|
ctrl |= TWL4030_KEYPAD_CTRL_SOFTMODEN;
|
|
ret |= twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD,
|
|
TWL4030_KEYPAD_KEYP_CTRL_REG, ctrl);
|
|
/* enable key event status */
|
|
ret |= twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD,
|
|
TWL4030_KEYPAD_KEYP_IMR1, 0xfe);
|
|
/* enable interrupt generation on rising and falling */
|
|
/* this is a workaround for qemu twl4030 emulation */
|
|
ret |= twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD,
|
|
TWL4030_KEYPAD_KEYP_EDR, 0x57);
|
|
/* enable ISR clear on read */
|
|
ret |= twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD,
|
|
TWL4030_KEYPAD_KEYP_SIH_CTRL, 0x05);
|
|
return 0;
|
|
}
|
|
|
|
static void rx51_kp_fill(u8 k, u8 mods)
|
|
{
|
|
/* check if some cursor key without meta fn key was pressed */
|
|
if (!(mods & 2) && (k == 18 || k == 31 || k == 33 || k == 34)) {
|
|
keybuf[keybuf_tail++] = '\e';
|
|
keybuf_tail %= KEYBUF_SIZE;
|
|
keybuf[keybuf_tail++] = '[';
|
|
keybuf_tail %= KEYBUF_SIZE;
|
|
if (k == 18) /* up */
|
|
keybuf[keybuf_tail++] = 'A';
|
|
else if (k == 31) /* left */
|
|
keybuf[keybuf_tail++] = 'D';
|
|
else if (k == 33) /* down */
|
|
keybuf[keybuf_tail++] = 'B';
|
|
else if (k == 34) /* right */
|
|
keybuf[keybuf_tail++] = 'C';
|
|
keybuf_tail %= KEYBUF_SIZE;
|
|
return;
|
|
}
|
|
|
|
if (mods & 2) { /* fn meta key was pressed */
|
|
k = keymap[k+64];
|
|
} else {
|
|
k = keymap[k];
|
|
if (mods & 1) { /* ctrl key was pressed */
|
|
if (k >= 'a' && k <= 'z')
|
|
k -= 'a' - 1;
|
|
}
|
|
if (mods & 4) { /* shift key was pressed */
|
|
if (k >= 'a' && k <= 'z')
|
|
k += 'A' - 'a';
|
|
else if (k == '.')
|
|
k = ':';
|
|
else if (k == ',')
|
|
k = ';';
|
|
}
|
|
}
|
|
keybuf[keybuf_tail++] = k;
|
|
keybuf_tail %= KEYBUF_SIZE;
|
|
}
|
|
|
|
/*
|
|
* Routine: rx51_kp_tstc
|
|
* Description: Test if key was pressed (from buffer).
|
|
*/
|
|
int rx51_kp_tstc(struct stdio_dev *sdev)
|
|
{
|
|
u8 c, r, dk, i;
|
|
u8 intr;
|
|
u8 mods;
|
|
|
|
/* localy lock twl4030 i2c bus */
|
|
if (test_and_set_bit(0, &twl_i2c_lock))
|
|
return 0;
|
|
|
|
/* twl4030 remembers up to 2 events */
|
|
for (i = 0; i < 2; i++) {
|
|
|
|
/* check interrupt register for events */
|
|
twl4030_i2c_read_u8(TWL4030_CHIP_KEYPAD,
|
|
TWL4030_KEYPAD_KEYP_ISR1 + (2 * i), &intr);
|
|
|
|
/* no event */
|
|
if (!(intr&1))
|
|
continue;
|
|
|
|
/* read the key state */
|
|
i2c_read(TWL4030_CHIP_KEYPAD,
|
|
TWL4030_KEYPAD_FULL_CODE_7_0, 1, keys, 8);
|
|
|
|
/* cut out modifier keys from the keystate */
|
|
mods = keys[4] >> 4;
|
|
keys[4] &= 0x0f;
|
|
|
|
for (c = 0; c < 8; c++) {
|
|
|
|
/* get newly pressed keys only */
|
|
dk = ((keys[c] ^ old_keys[c])&keys[c]);
|
|
old_keys[c] = keys[c];
|
|
|
|
/* fill the keybuf */
|
|
for (r = 0; r < 8; r++) {
|
|
if (dk&1)
|
|
rx51_kp_fill((c*8)+r, mods);
|
|
dk = dk >> 1;
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/* localy unlock twl4030 i2c bus */
|
|
test_and_clear_bit(0, &twl_i2c_lock);
|
|
|
|
return (KEYBUF_SIZE + keybuf_tail - keybuf_head)%KEYBUF_SIZE;
|
|
}
|
|
|
|
/*
|
|
* Routine: rx51_kp_getc
|
|
* Description: Get last pressed key (from buffer).
|
|
*/
|
|
int rx51_kp_getc(struct stdio_dev *sdev)
|
|
{
|
|
keybuf_head %= KEYBUF_SIZE;
|
|
while (!rx51_kp_tstc(sdev))
|
|
WATCHDOG_RESET();
|
|
return keybuf[keybuf_head++];
|
|
}
|
|
|
|
/*
|
|
* Routine: board_mmc_init
|
|
* Description: Initialize mmc devices.
|
|
*/
|
|
int board_mmc_init(bd_t *bis)
|
|
{
|
|
omap_mmc_init(0, 0, 0, -1, -1);
|
|
omap_mmc_init(1, 0, 0, -1, -1);
|
|
return 0;
|
|
}
|
|
|
|
void board_mmc_power_init(void)
|
|
{
|
|
twl4030_power_mmc_init(0);
|
|
twl4030_power_mmc_init(1);
|
|
}
|