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rk29: reset: support reboot to loader

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黄涛
2011-06-21 11:49:07 +08:00
parent a668cd559c
commit db83b54a2e
1 changed files with 14 additions and 2 deletions
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16
arch/arm/mach-rk29/reset.c
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@@ -38,7 +38,7 @@ static void pwm2gpiodefault(void)
extern void __rb( void* );
void rb( void )
static void rb( void )
{
void(*cb)(void* ) ;
@@ -52,9 +52,11 @@ void rb( void )
cb( uart_base );
}
static volatile u32 __sramdata reboot_reason = 0;
static void __sramfunc __noreturn rk29_rb_with_softreset(void)
{
u32 reg;
u32 reason = __raw_readl((u32)&reboot_reason - SRAM_CODE_OFFSET + 0x10130000);
asm volatile (
"mrc p15, 0, %0, c1, c0, 0\n\t"
@@ -95,6 +97,11 @@ static void __sramfunc __noreturn rk29_rb_with_softreset(void)
dsb();
LOOP(10 * LOOPS_PER_USEC);
if (reason) {
__raw_writel(0, RK29_TIMER0_PHYS + 0x8);
__raw_writel(reason, RK29_TIMER0_PHYS + 0x0);
}
asm volatile (
"b 1f\n\t"
".align 5\n\t"
@@ -106,10 +113,15 @@ static void __sramfunc __noreturn rk29_rb_with_softreset(void)
while (1);
}
void rk29_arch_reset(int mode, const char *cmd)
void rk29_arch_reset(int mode, const char *cmd)
{
void (*rb2)(void);
if (cmd) {
if (!strcmp(cmd, "loader"))
reboot_reason = 0x1888AAFF;
}
rb2 = (void(*)(void))((u32)rk29_rb_with_softreset - SRAM_CODE_OFFSET + 0x10130000);
local_irq_disable();