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SPARC/LEON: power down instruction different of different LEONs

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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>
This commit is contained in:
Daniel Hellstrom
2011-01-27 01:26:58 +00:00
committed by David S. Miller
parent 684151a75b
commit 7279b82cb1
5 changed files with 97 additions and 17 deletions
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9
arch/sparc/kernel/leon_kernel.c
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@@ -30,6 +30,7 @@ struct amba_apb_device leon_percpu_timer_dev[16];
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 @@ void __init leon_init_timers(irq_handler_t counter_fn)
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");