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ARM: PRIMA2: initialize l2x0 according to mach from DT

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prima2 and marco have diffetent l2 cache configuration, so
we initialize l2x0 cache based on dtb given to kernel.

Signed-off-by: Barry Song <Baohua.Song@csr.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
This commit is contained in:
Barry Song 2012-12-20 17:20:46 +08:00 committed by Barry Song
parent 20ddfa9324
commit ea38960fb6
1 changed files with 24 additions and 5 deletions
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29
arch/arm/mach-prima2/l2x0.c
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@ -11,19 +11,38 @@
#include <linux/of.h>
#include <asm/hardware/cache-l2x0.h>
static struct of_device_id prima2_l2x0_ids[] = {
{ .compatible = "sirf,prima2-pl310-cache" },
struct l2x0_aux
{
u32 val;
u32 mask;
};
static struct l2x0_aux prima2_l2x0_aux __initconst = {
.val = 2 << L2X0_AUX_CTRL_WAY_SIZE_SHIFT,
.mask = 0,
};
static struct l2x0_aux marco_l2x0_aux __initconst = {
.val = (2 << L2X0_AUX_CTRL_WAY_SIZE_SHIFT) |
(1 << L2X0_AUX_CTRL_ASSOCIATIVITY_SHIFT),
.mask = L2X0_AUX_CTRL_MASK,
};
static struct of_device_id sirf_l2x0_ids[] __initconst = {
{ .compatible = "sirf,prima2-pl310-cache", .data = &prima2_l2x0_aux, },
{ .compatible = "sirf,marco-pl310-cache", .data = &marco_l2x0_aux, },
{},
};
static int __init sirfsoc_l2x0_init(void)
{
struct device_node *np;
const struct l2x0_aux *aux;
np = of_find_matching_node(NULL, prima2_l2x0_ids);
np = of_find_matching_node(NULL, sirf_l2x0_ids);
if (np) {
pr_info("Initializing prima2 L2 cache\n");
return l2x0_of_init(0x40000, 0);
aux = of_match_node(sirf_l2x0_ids, np)->data;
return l2x0_of_init(aux->val, aux->mask);
}
return 0;