mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-10 20:23:54 +09:00
11dfd1a331
Bootrom loads SPL from SDCARD or eMMC
according BootPin selection.
Then SPL loads U-Boot on the same mmc device
with the following predefined GPT partitioning:
on SDCARD: gpt partitioning
1: SPL
2: SPL#2
3: U-Boot
4: bootable partition
on eMMC:
The 2 boot partitions are used for SPL (2 copy)
boot1: SPL
boot2: SPL#2
The user partition use gpt partitioning
1: U-Boot
2: bootable partition
This patch select the correct SPL partition
(3 for SDCARD on mmc0 and 1 for eMMC on mmc1)
according the BootRom information saved in TAMP register
and based on configuration flasg:
- CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION
=> for BOOT_DEVICE_MMC1 or mmc 0 in U-Boot
- CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_MMC2 (new)
=> for BOOT_DEVICE_MMC2 or mmc 1 in U-Boot
And the correct boot_targets is selected according the environment
variables boot_device and boot_instance, with preboot command,
to search the bootable partition with kernel on this device
(generic distro support).
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
91 lines
1.7 KiB
C
91 lines
1.7 KiB
C
/*
|
|
* Copyright (C) 2018, STMicroelectronics - All Rights Reserved
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <spl.h>
|
|
#include <asm/io.h>
|
|
|
|
u32 spl_boot_device(void)
|
|
{
|
|
u32 boot_mode;
|
|
|
|
boot_mode = (readl(TAMP_BOOT_CONTEXT) & TAMP_BOOT_MODE_MASK) >>
|
|
TAMP_BOOT_MODE_SHIFT;
|
|
clrsetbits_le32(TAMP_BOOT_CONTEXT,
|
|
TAMP_BOOT_MODE_MASK,
|
|
boot_mode << TAMP_BOOT_MODE_SHIFT);
|
|
|
|
switch (boot_mode) {
|
|
case BOOT_FLASH_SD_1:
|
|
case BOOT_FLASH_EMMC_1:
|
|
return BOOT_DEVICE_MMC1;
|
|
case BOOT_FLASH_SD_2:
|
|
case BOOT_FLASH_EMMC_2:
|
|
return BOOT_DEVICE_MMC2;
|
|
}
|
|
|
|
return BOOT_DEVICE_MMC1;
|
|
}
|
|
|
|
u32 spl_boot_mode(const u32 boot_device)
|
|
{
|
|
return MMCSD_MODE_RAW;
|
|
}
|
|
|
|
int spl_boot_partition(const u32 boot_device)
|
|
{
|
|
switch (boot_device) {
|
|
case BOOT_DEVICE_MMC1:
|
|
return CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION;
|
|
case BOOT_DEVICE_MMC2:
|
|
return CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_MMC2;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
void board_init_f(ulong dummy)
|
|
{
|
|
struct udevice *dev;
|
|
int ret;
|
|
|
|
arch_cpu_init();
|
|
|
|
ret = spl_early_init();
|
|
if (ret) {
|
|
debug("spl_early_init() failed: %d\n", ret);
|
|
hang();
|
|
}
|
|
|
|
ret = uclass_get_device(UCLASS_CLK, 0, &dev);
|
|
if (ret) {
|
|
debug("Clock init failed: %d\n", ret);
|
|
return;
|
|
}
|
|
|
|
ret = uclass_get_device(UCLASS_RESET, 0, &dev);
|
|
if (ret) {
|
|
debug("Reset init failed: %d\n", ret);
|
|
return;
|
|
}
|
|
|
|
ret = uclass_get_device(UCLASS_PINCTRL, 0, &dev);
|
|
if (ret) {
|
|
debug("%s: Cannot find pinctrl device\n", __func__);
|
|
return;
|
|
}
|
|
|
|
/* enable console uart printing */
|
|
preloader_console_init();
|
|
|
|
ret = uclass_get_device(UCLASS_RAM, 0, &dev);
|
|
if (ret) {
|
|
debug("DRAM init failed: %d\n", ret);
|
|
return;
|
|
}
|
|
}
|