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powerpc/mpc8xx: Zero boot_flags arg for calling board_init_f()

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Copied from e83a7e9453 ("powerpc/mpc83xx: Zero boot_flags arg for
calling board_init_f()")

The argument boot_flags of board_init_f() is not used at all in the
powerpc specific board.c init sequence. Now with the generic init
sequence, this boot_flags arg is used by board_init_f().

This patch sets the r3 register that is used to pass the boot_flags
argument from the start.S board_init_f() call to 0 prior to the function
call to avoid unknown content to end up in gd->flags.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Fixes: 09f3ca3dd5 ("arm, powerpc: select SYS_GENERIC_BOARD")
This commit is contained in:
Christophe Leroy 2023-01-28 13:53:10 +01:00
parent 30db474704
commit 2eed0c25f6
1 changed files with 1 additions and 0 deletions
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arch/powerpc/cpu/mpc8xx/start.S
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@ -171,6 +171,7 @@ in_flash:
lis r3, CONFIG_SYS_IMMR@h
bl cpu_init_f /* run low-level CPU init code (from Flash) */
li r3, 0 /* clear boot_flag for calling board_init_f */
bl board_init_f /* run 1st part of board init code (from Flash) */
/* NOTREACHED - board_init_f() does not return */