SPARC/LEON: power down instruction different of different LEONs
The way a LEON is powered down is implemented differently depending
on CHIP type. The AMBA Plug&Play system ID tells revision of GRLIB
and CHIP.
This is for example needed by the GR-LEON4-ITX board and the UT699.
Previously the power down support for LEON was limited to SMP, now
both SMP and UP systems use the instruction.
Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/leon_kernel.c b/arch/sparc/kernel/leon_kernel.c
index fdab7f8..2f8a9a2 100644
--- a/arch/sparc/kernel/leon_kernel.c
+++ b/arch/sparc/kernel/leon_kernel.c
@@ -30,6 +30,7 @@
int leondebug_irq_disable;
int leon_debug_irqout;
static int dummy_master_l10_counter;
+unsigned long amba_system_id;
unsigned long leon3_gptimer_irq; /* interrupt controller irq number */
unsigned long leon3_gptimer_idx; /* Timer Index (0..6) within Timer Core */
@@ -117,10 +118,16 @@
master_l10_counter = (unsigned int *)&dummy_master_l10_counter;
dummy_master_l10_counter = 0;
- /*Find IRQMP IRQ Controller Registers base address otherwise bail out.*/
rootnp = of_find_node_by_path("/ambapp0");
if (!rootnp)
goto bad;
+
+ /* Find System ID: GRLIB build ID and optional CHIP ID */
+ pp = of_find_property(rootnp, "systemid", &len);
+ if (pp)
+ amba_system_id = *(unsigned long *)pp->value;
+
+ /* Find IRQMP IRQ Controller Registers base adr otherwise bail out */
np = of_find_node_by_name(rootnp, "GAISLER_IRQMP");
if (!np) {
np = of_find_node_by_name(rootnp, "01_00d");