brain-hackers_pepepper-mirror/u-boot-brain
1
0
Fork 0
mirror of https://github.com/brain-hackers/u-boot-brain synced 2024-09-30 00:20:44 +09:00
Code Issues Projects Releases Wiki Activity

armv7R: K3: j721e: Store boot index from ROM

Browse Source 
Obtain the boot index as left behind by the device boot ROM and store
it in scratch pad SRAM for later use before it may get overwritten.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
This commit is contained in:
Andreas Dannenberg 2019-06-13 10:29:45 +05:30 committed by Tom Rini
parent b73fcbced9
commit f94a07c8a1
1 changed files with 15 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
arch/arm/mach-k3/j721e_init.c
View File

@ -53,12 +53,25 @@ static void ctrl_mmr_unlock(void)
mmr_unlock(CTRL_MMR0_BASE, 7);
}
/*
* This uninitialized global variable would normal end up in the .bss section,
* but the .bss is cleared between writing and reading this variable, so move
* it to the .data section.
*/
u32 bootindex __attribute__((section(".data")));
static void store_boot_index_from_rom(void)
{
bootindex = *(u32 *)(CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX);
}
void board_init_f(ulong dummy)
{
/*
* ToDo:
* - Store boot rom index.
* Cannot delay this further as there is a chance that
* K3_BOOT_PARAM_TABLE_INDEX can be over written by SPL MALLOC section.
*/
store_boot_index_from_rom();
/* Make all control module registers accessible */
ctrl_mmr_unlock();