minix/u-boot
1
0
Fork 0
mirror of https://github.com/Stichting-MINIX-Research-Foundation/u-boot.git synced 2025-09-10 04:26:19 -04:00
Code Issues Packages Projects Releases Wiki Activity

mpc85xx: support board-specific reset function

Browse Source 
This is useful for boards which cannot be reset in the usual way for the
85xx CPU. An example is a board which can only be reset by a hardware
watchdog.

Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Ira W. Snyder 2011-11-21 13:20:32 -08:00 committed by Kumar Gala
parent cc15df57b1
commit c18de0d7ae
1 changed files with 16 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
arch/powerpc/cpu/mpc85xx/cpu.c
View File

@ -42,6 +42,16 @@
DECLARE_GLOBAL_DATA_PTR; DECLARE_GLOBAL_DATA_PTR;
/*
* Default board reset function
*/
static void
__board_reset(void)
{
/* Do nothing */
}
void board_reset(void) __attribute__((weak, alias("__board_reset")));
int checkcpu (void) int checkcpu (void)
{ {
sys_info_t sysinfo; sys_info_t sysinfo;
@ -215,7 +225,12 @@ int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
mtspr(DBCR0,val); mtspr(DBCR0,val);
#else #else
volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
out_be32(&gur->rstcr, 0x2); /* HRESET_REQ */
/* Attempt board-specific reset */
board_reset();
/* Next try asserting HRESET_REQ */
out_be32(&gur->rstcr, 0x2);
udelay(100); udelay(100);
#endif #endif