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mpc83xx: Replace ppcDWstore with inline assembly

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ppcDWstore/ppcDWload are hardly used by any board, but since they're
implemented in start.S, they're always present in every U-Boot image,
even if they're not needed.

Re-implement these fuctions in C with inline assembly, so that the
compiler can decide when to actually include them.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
This commit is contained in:
Mario Six 2019-01-21 09:18:20 +01:00
parent 8835836ae7
commit 1e718f43de
2 changed files with 18 additions and 12 deletions
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18
arch/powerpc/cpu/mpc83xx/cpu.c
View file

@ -229,3 +229,21 @@ int cpu_mmc_init(bd_t *bis)
return 0; return 0;
#endif #endif
} }
void ppcDWstore(unsigned int *addr, unsigned int *value)
{
asm("lfd 1, 0(%1)\n\t"
"stfd 1, 0(%0)"
:
: "r" (addr), "r" (value)
: "memory");
}
void ppcDWload(unsigned int *addr, unsigned int *ret)
{
asm("lfd 1, 0(%0)\n\t"
"stfd 1, 0(%1)"
:
: "r" (addr), "r" (ret)
: "memory");
}

12
arch/powerpc/cpu/mpc83xx/start.S
View file

@ -119,18 +119,6 @@ disable_addr_trans:
mtspr SRR1, r3 mtspr SRR1, r3
rfi rfi
.globl ppcDWstore
ppcDWstore:
lfd 1, 0(r4)
stfd 1, 0(r3)
blr
.globl ppcDWload
ppcDWload:
lfd 1, 0(r3)
stfd 1, 0(r4)
blr
#ifndef CONFIG_DEFAULT_IMMR #ifndef CONFIG_DEFAULT_IMMR
#error CONFIG_DEFAULT_IMMR must be defined #error CONFIG_DEFAULT_IMMR must be defined
#endif /* CONFIG_DEFAULT_IMMR */ #endif /* CONFIG_DEFAULT_IMMR */