mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-11 13:56:30 +00:00
f6a6a9f049
Add configuration file with parameters that are very likely to be shared by all ast2500-based boards. Add ast2500-board.c file with the init code that is very likely to be shared by all ast2500-based boards. Reviewed-by: Simon Glass <sjg@chromium.org>
83 lines
1.6 KiB
C
83 lines
1.6 KiB
C
/*
|
|
* Copyright (c) 2016 Google, Inc
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <ram.h>
|
|
#include <timer.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/timer.h>
|
|
#include <asm/arch/wdt.h>
|
|
#include <linux/err.h>
|
|
#include <dm/uclass.h>
|
|
|
|
/*
|
|
* Second Watchdog Timer by default is configured
|
|
* to trigger secondary boot source.
|
|
*/
|
|
#define AST_2ND_BOOT_WDT 1
|
|
|
|
/*
|
|
* Third Watchdog Timer by default is configured
|
|
* to toggle Flash address mode switch before reset.
|
|
*/
|
|
#define AST_FLASH_ADDR_DETECT_WDT 2
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
void lowlevel_init(void)
|
|
{
|
|
/*
|
|
* These two watchdogs need to be stopped as soon as possible,
|
|
* otherwise the board might hang. By default they are set to
|
|
* a very short timeout and even simple debug write to serial
|
|
* console early in the init process might cause them to fire.
|
|
*/
|
|
struct ast_wdt *flash_addr_wdt =
|
|
(struct ast_wdt *)(WDT_BASE +
|
|
sizeof(struct ast_wdt) *
|
|
AST_FLASH_ADDR_DETECT_WDT);
|
|
|
|
clrbits_le32(&flash_addr_wdt->ctrl, WDT_CTRL_EN);
|
|
|
|
#ifndef CONFIG_FIRMWARE_2ND_BOOT
|
|
struct ast_wdt *sec_boot_wdt =
|
|
(struct ast_wdt *)(WDT_BASE +
|
|
sizeof(struct ast_wdt) *
|
|
AST_2ND_BOOT_WDT);
|
|
|
|
clrbits_le32(&sec_boot_wdt->ctrl, WDT_CTRL_EN);
|
|
#endif
|
|
}
|
|
|
|
int board_init(void)
|
|
{
|
|
gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int dram_init(void)
|
|
{
|
|
struct udevice *dev;
|
|
struct ram_info ram;
|
|
int ret;
|
|
|
|
ret = uclass_get_device(UCLASS_RAM, 0, &dev);
|
|
if (ret) {
|
|
debug("DRAM FAIL1\r\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = ram_get_info(dev, &ram);
|
|
if (ret) {
|
|
debug("DRAM FAIL2\r\n");
|
|
return ret;
|
|
}
|
|
|
|
gd->ram_size = ram.size;
|
|
|
|
return 0;
|
|
}
|