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ARM: CSR: call l2x0_of_init to init L2 cache of SiRFprimaII 

Cc: Rob Herring <robherring2@gmail.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
This commit is contained in:
Barry Song 2011-09-15 19:16:28 -07:00 committed by Barry Song
parent 1e11bec9b0
commit 917d853564
2 changed files with 13 additions and 38 deletions
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5
arch/arm/boot/dts/prima2-cb.dts
View File

@ -39,9 +39,12 @@
ranges = <0x40000000 0x40000000 0x80000000>;
l2-cache-controller@80040000 {
compatible = "arm,pl310-cache";
compatible = "arm,pl310-cache", "sirf,prima2-pl310-cache";
reg = <0x80040000 0x1000>;
interrupts = <59>;
arm,tag-latency = <1 1 1>;
arm,data-latency = <1 1 1>;
arm,filter-ranges = <0 0x40000000>;
};
intc: interrupt-controller@80020000 {

46
arch/arm/mach-prima2/l2x0.c
View File

@ -8,52 +8,24 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/io.h>
#include <linux/errno.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <asm/hardware/cache-l2x0.h>
#include <mach/memory.h>
#define L2X0_ADDR_FILTERING_START 0xC00
#define L2X0_ADDR_FILTERING_END 0xC04
static struct of_device_id l2x_ids[] = {
{ .compatible = "arm,pl310-cache" },
static struct of_device_id prima2_l2x0_ids[] = {
{ .compatible = "sirf,prima2-pl310-cache" },
{},
};
static int __init sirfsoc_of_l2x_init(void)
static int __init sirfsoc_l2x0_init(void)
{
struct device_node *np;
void __iomem *sirfsoc_l2x_base;
np = of_find_matching_node(NULL, l2x_ids);
if (!np)
panic("unable to find compatible l2x node in dtb\n");
sirfsoc_l2x_base = of_iomap(np, 0);
if (!sirfsoc_l2x_base)
panic("unable to map l2x cpu registers\n");
of_node_put(np);
if (!(readl_relaxed(sirfsoc_l2x_base + L2X0_CTRL) & 1)) {
/*
* set the physical memory windows L2 cache will cover
*/
writel_relaxed(PLAT_PHYS_OFFSET + 1024 * 1024 * 1024,
sirfsoc_l2x_base + L2X0_ADDR_FILTERING_END);
writel_relaxed(PLAT_PHYS_OFFSET | 0x1,
sirfsoc_l2x_base + L2X0_ADDR_FILTERING_START);
writel_relaxed(0,
sirfsoc_l2x_base + L2X0_TAG_LATENCY_CTRL);
writel_relaxed(0,
sirfsoc_l2x_base + L2X0_DATA_LATENCY_CTRL);
np = of_find_matching_node(NULL, prima2_l2x0_ids);
if (np) {
pr_info("Initializing prima2 L2 cache\n");
return l2x0_of_init(0x40000, 0);
}
l2x0_init((void __iomem *)sirfsoc_l2x_base, 0x00040000,
0x00000000);
return 0;
}
early_initcall(sirfsoc_of_l2x_init);
early_initcall(sirfsoc_l2x0_init);