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ARM: EXYNOS: Add secure firmware support to secondary CPU bring-up

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Boards using secure firmware must use different CPU boot registers and
call secure firmware to boot the CPU.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Tomasz Figa 2012-12-11 13:58:43 +09:00 committed by Kukjin Kim
parent 41de89860b
commit beddf63fc8
1 changed files with 27 additions and 5 deletions
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32
arch/arm/mach-exynos/platsmp.c
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@ -25,6 +25,7 @@
#include <asm/cacheflush.h>
#include <asm/smp_plat.h>
#include <asm/smp_scu.h>
#include <asm/firmware.h>
#include <mach/hardware.h>
#include <mach/regs-clock.h>
@ -145,10 +146,21 @@ static int __cpuinit exynos_boot_secondary(unsigned int cpu, struct task_struct
timeout = jiffies + (1 * HZ);
while (time_before(jiffies, timeout)) {
unsigned long boot_addr;
smp_rmb();
__raw_writel(virt_to_phys(exynos4_secondary_startup),
cpu_boot_reg(phys_cpu));
boot_addr = virt_to_phys(exynos4_secondary_startup);
/*
* Try to set boot address using firmware first
* and fall back to boot register if it fails.
*/
if (call_firmware_op(set_cpu_boot_addr, phys_cpu, boot_addr))
__raw_writel(boot_addr, cpu_boot_reg(phys_cpu));
call_firmware_op(cpu_boot, phys_cpu);
arch_send_wakeup_ipi_mask(cpumask_of(cpu));
if (pen_release == -1)
@ -204,10 +216,20 @@ static void __init exynos_smp_prepare_cpus(unsigned int max_cpus)
* system-wide flags register. The boot monitor waits
* until it receives a soft interrupt, and then the
* secondary CPU branches to this address.
*
* Try using firmware operation first and fall back to
* boot register if it fails.
*/
for (i = 1; i < max_cpus; ++i)
__raw_writel(virt_to_phys(exynos4_secondary_startup),
cpu_boot_reg(cpu_logical_map(i)));
for (i = 1; i < max_cpus; ++i) {
unsigned long phys_cpu;
unsigned long boot_addr;
phys_cpu = cpu_logical_map(i);
boot_addr = virt_to_phys(exynos4_secondary_startup);
if (call_firmware_op(set_cpu_boot_addr, phys_cpu, boot_addr))
__raw_writel(boot_addr, cpu_boot_reg(phys_cpu));
}
}
struct smp_operations exynos_smp_ops __initdata = {