kernel-fxtec-pro1x/arch/arm/mach-omap2/omap4-common.c
Santosh Shilimkar a777b7277e omap4: l2x0: Fix init parameter for es2.0
On ES2.0 the L2 cache init parameter ineeds to be changed to take
care of cache size. The cache size is 1MB on ES2.0 vs 512KB on ES1.0

This patch fixes the init parameter to update the same using
dynamic cpu version check

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
2010-09-24 11:30:18 +05:30

76 lines
1.7 KiB
C

/*
* OMAP4 specific common source file.
*
* Copyright (C) 2010 Texas Instruments, Inc.
* Author:
* Santosh Shilimkar <santosh.shilimkar@ti.com>
*
*
* This program is free software,you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <asm/hardware/gic.h>
#include <asm/hardware/cache-l2x0.h>
#include <mach/hardware.h>
#include <mach/omap4-common.h>
#ifdef CONFIG_CACHE_L2X0
void __iomem *l2cache_base;
#endif
void __iomem *gic_cpu_base_addr;
void __iomem *gic_dist_base_addr;
void __init gic_init_irq(void)
{
/* Static mapping, never released */
gic_dist_base_addr = ioremap(OMAP44XX_GIC_DIST_BASE, SZ_4K);
BUG_ON(!gic_dist_base_addr);
gic_dist_init(0, gic_dist_base_addr, 29);
/* Static mapping, never released */
gic_cpu_base_addr = ioremap(OMAP44XX_GIC_CPU_BASE, SZ_512);
BUG_ON(!gic_cpu_base_addr);
gic_cpu_init(0, gic_cpu_base_addr);
}
#ifdef CONFIG_CACHE_L2X0
static int __init omap_l2_cache_init(void)
{
/*
* To avoid code running on other OMAPs in
* multi-omap builds
*/
if (!cpu_is_omap44xx())
return -ENODEV;
/* Static mapping, never released */
l2cache_base = ioremap(OMAP44XX_L2CACHE_BASE, SZ_4K);
BUG_ON(!l2cache_base);
/* Enable PL310 L2 Cache controller */
omap_smc1(0x102, 0x1);
/*
* 16-way associativity, parity disabled
* Way size - 32KB (es1.0)
* Way size - 64KB (es2.0 +)
*/
if (omap_rev() == OMAP4430_REV_ES1_0)
l2x0_init(l2cache_base, 0x0e050000, 0xc0000fff);
else
l2x0_init(l2cache_base, 0x0e070000, 0xc0000fff);
return 0;
}
early_initcall(omap_l2_cache_init);
#endif