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at91rm9200: Reset update

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Update the rm9200 reset sequence to try executing a board-specific reset
function and move specific board reset to board.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
This commit is contained in:
Jean-Christophe PLAGNIOL-VILLARD 2009-03-27 23:26:43 +01:00
parent 3524049cd0
commit f82518d7f4
2 changed files with 14 additions and 10 deletions
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10
board/atmel/at91rm9200dk/at91rm9200dk.c
View File

@ -54,6 +54,16 @@ int board_init (void)
return 0; return 0;
} }
void board_reset (void)
{
AT91PS_PIO pio = AT91C_BASE_PIOA;
/* Clear PA19 to trigger the hard reset */
writel(0x00080000, pio->PIO_CODR);
writel(0x00080000, pio->PIO_OER);
writel(0x00080000, pio->PIO_PER);
}
int dram_init (void) int dram_init (void)
{ {
gd->bd->bi_dram[0].start = PHYS_SDRAM; gd->bd->bi_dram[0].start = PHYS_SDRAM;

14
cpu/arm920t/at91rm9200/interrupts.c
View File

@ -45,6 +45,8 @@ AT91PS_TC tmr;
static ulong timestamp; static ulong timestamp;
static ulong lastinc; static ulong lastinc;
void board_reset(void) __attribute__((__weak__));
int interrupt_init (void) int interrupt_init (void)
{ {
tmr = AT91C_BASE_TC0; tmr = AT91C_BASE_TC0;
@ -166,21 +168,13 @@ ulong get_tbclk (void)
void reset_cpu (ulong ignored) void reset_cpu (ulong ignored)
{ {
#ifdef CONFIG_AT91RM9200DK
AT91PS_PIO pio = AT91C_BASE_PIOA;
#endif
#if defined(CONFIG_AT91RM9200_USART) #if defined(CONFIG_AT91RM9200_USART)
/*shutdown the console to avoid strange chars during reset */ /*shutdown the console to avoid strange chars during reset */
serial_exit(); serial_exit();
#endif #endif
#ifdef CONFIG_AT91RM9200DK if (board_reset)
/* Clear PA19 to trigger the hard reset */ board_reset();
pio->PIO_CODR = 0x00080000;
pio->PIO_OER = 0x00080000;
pio->PIO_PER = 0x00080000;
#endif
/* this is the way Linux does it */ /* this is the way Linux does it */