Commit 4ba99b97 authored by Michael Ellerman's avatar Michael Ellerman Committed by Paul Mackerras
Browse files

[POWERPC] Setup the boot cpu's paca pointer in C rather than asm



There's no need to set the boot cpu paca in asm, so do it in C so us
mere mortals can understand it.
Signed-off-by: default avatarMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent aa98c50d
......@@ -1976,17 +1976,6 @@ _STATIC(start_here_common)
/* Not reached */
BUG_OPCODE
/* Put the paca pointer into r13 and SPRG3 */
_GLOBAL(setup_boot_paca)
LOAD_REG_IMMEDIATE(r3, boot_cpuid)
lwz r3,0(r3)
LOAD_REG_IMMEDIATE(r4, paca) /* Get base vaddr of paca array */
mulli r3,r3,PACA_SIZE /* Calculate vaddr of right paca */
add r13,r3,r4 /* for this processor. */
mtspr SPRN_SPRG3,r13
blr
/*
* We put a few things here that have to be page-aligned.
* This stuff goes at the beginning of the bss, which is page-aligned.
......
......@@ -149,6 +149,13 @@ early_param("smt-enabled", early_smt_enabled);
#define check_smt_enabled()
#endif /* CONFIG_SMP */
/* Put the paca pointer into r13 and SPRG3 */
void __init setup_paca(int cpu)
{
local_paca = &paca[cpu];
mtspr(SPRN_SPRG3, local_paca);
}
/*
* Early initialization entry point. This is called by head.S
* with MMU translation disabled. We rely on the "feature" of
......@@ -183,7 +190,7 @@ void __init early_setup(unsigned long dt_ptr)
early_init_devtree(__va(dt_ptr));
/* Now we know the logical id of our boot cpu, setup the paca. */
setup_boot_paca();
setup_paca(boot_cpuid);
/* Fix up paca fields required for the boot cpu */
get_paca()->cpu_start = 1;
......
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