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atheros: fix reboot on ar2315 devices which do not implement the atheros reference design workaround for the buggy reset logic (e.g. some senao stuff)

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13556 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2008-12-09 01:53:02 +00:00
parent 1cbeaa9944
commit a7e00f338e
1 changed files with 15 additions and 8 deletions
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23
target/linux/atheros/files/arch/mips/atheros/ar5315/board.c
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@ -21,6 +21,7 @@
#include <linux/platform_device.h>
#include <linux/kernel.h>
#include <linux/reboot.h>
#include <linux/delay.h>
#include <asm/bootinfo.h>
#include <asm/reboot.h>
#include <asm/time.h>
@ -279,15 +280,21 @@ static void ar5315_power_off(void)
static void ar5315_restart(char *command)
{
for(;;) {
/* reset the system */
sysRegWrite(AR5315_COLD_RESET,AR5317_RESET_SYSTEM);
void (*mips_reset_vec)(void) = (void *) 0xbfc00000;
/*
* Cold reset does not work on the AR2315/6, use the GPIO reset bits a workaround.
*/
gpio_direction_output(AR5315_RESET_GPIO, 0);
}
/* reset the system */
sysRegWrite(AR5315_COLD_RESET,AR5317_RESET_SYSTEM);
/* Cold reset does not work on the AR2315/6, use the GPIO reset bits a workaround.
* give it some time to attempt a gpio based hardware reset
* (atheros reference design workaround) */
gpio_direction_output(AR5315_RESET_GPIO, 0);
mdelay(100);
/* Some boards (e.g. Senao EOC-2610) don't implement the reset logic
* workaround. Attempt to jump to the mips reset location -
* the boot loader itself might be able to recover the system */
mips_reset_vec();
}