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ARM: meson: Add support for fastboot_set_reboot_flag()

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Add support for fastboot_set_reboot_flag() by storing the reboot
flag in the common code to be used by the custom PSCI reboot handler.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
This commit is contained in:
Neil Armstrong
2019-05-22 13:30:25 +02:00
parent 0998367515
commit 9a34dedfae
1 changed files with 33 additions and 0 deletions
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33
arch/arm/mach-meson/board-common.c
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@@ -14,6 +14,11 @@
#include <asm/unaligned.h> #include <asm/unaligned.h>
#include <efi_loader.h> #include <efi_loader.h>
#if CONFIG_IS_ENABLED(FASTBOOT)
#include <asm/psci.h>
#include <fastboot.h>
#endif
DECLARE_GLOBAL_DATA_PTR; DECLARE_GLOBAL_DATA_PTR;
__weak int board_init(void) __weak int board_init(void)
@@ -142,7 +147,35 @@ int board_late_init(void)
return meson_board_late_init(); return meson_board_late_init();
} }
#if CONFIG_IS_ENABLED(FASTBOOT)
static unsigned int reboot_reason = REBOOT_REASON_NORMAL;
int fastboot_set_reboot_flag()
{
reboot_reason = REBOOT_REASON_BOOTLOADER;
printf("Using reboot reason: 0x%x\n", reboot_reason);
return 0;
}
void reset_cpu(ulong addr)
{
struct pt_regs regs;
regs.regs[0] = ARM_PSCI_0_2_FN_SYSTEM_RESET;
regs.regs[1] = reboot_reason;
printf("Rebooting with reason: 0x%lx\n", regs.regs[1]);
smc_call(&regs);
while (1)
;
}
#else
void reset_cpu(ulong addr) void reset_cpu(ulong addr)
{ {
psci_system_reset(); psci_system_reset();
} }
#endif