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ls1021a: adding a secondary core boot address and kick functions

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Define the board specific smp_set_cpu_boot_addr() function to set
the start address for secondary cores in the LS1021A specific manner.

Define the board specific smp_kick_all_cpus() functioin to boot a
secondary core. Here the BRR contains control bits for enabling boot
for each core. On exiting HRESET or PORESET, the RCW BOOT_HO field
optionally allows for logical core 0 to be released for booting or to
remain in boot holdoff. All other cores remain in boot holdoff until
their corresponding bit is set.

Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
This commit is contained in:
Xiubo Li 2014-11-21 17:40:56 +08:00 committed by York Sun
parent 73a1cb27c0
commit 290e6e921f
1 changed files with 18 additions and 0 deletions
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18
arch/arm/cpu/armv7/ls102xa/cpu.c
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@ -117,3 +117,21 @@ int arch_cpu_init(void)
return 0;
}
#if defined(CONFIG_ARMV7_NONSEC) || defined(CONFIG_ARMV7_VIRT)
/* Set the address at which the secondary core starts from.*/
void smp_set_core_boot_addr(unsigned long addr, int corenr)
{
struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
out_be32(&gur->scratchrw[0], addr);
}
/* Release the secondary core from holdoff state and kick it */
void smp_kick_all_cpus(void)
{
struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
out_be32(&gur->brrl, 0x2);
}
#endif