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 <i...@ovro.caltech.edu>
---
arch/powerpc/cpu/mpc85xx/cpu.c | 17 ++++++++++++++++-
1 files changed, 16 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/cpu/mpc85xx/cpu.c b/arch/powerpc/cpu/mpc85xx/cpu.c
index 22fa461..aaa0d21 100644
--- a/arch/powerpc/cpu/mpc85xx/cpu.c
+++ b/arch/powerpc/cpu/mpc85xx/cpu.c
@@ -42,6 +42,16 @@
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)
{
sys_info_t sysinfo;
@@ -217,7 +227,12 @@ int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *
const argv[])
mtspr(DBCR0,val);
#else
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);
#endif
--
1.7.3.4
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