forked from luck/tmp_suning_uos_patched
d309427e79
This patch adds L2 Cache support for OMAP4. External L2 cache is used in OMAP4 CC: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
157 lines
3.7 KiB
C
157 lines
3.7 KiB
C
/*
|
|
* Board support file for OMAP4430 SDP.
|
|
*
|
|
* Copyright (C) 2009 Texas Instruments
|
|
*
|
|
* Author: Santosh Shilimkar <santosh.shilimkar@ti.com>
|
|
*
|
|
* Based on mach-omap2/board-3430sdp.c
|
|
*
|
|
* 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/platform_device.h>
|
|
#include <linux/io.h>
|
|
#include <linux/gpio.h>
|
|
|
|
#include <mach/hardware.h>
|
|
#include <asm/mach-types.h>
|
|
#include <asm/mach/arch.h>
|
|
#include <asm/mach/map.h>
|
|
|
|
#include <plat/board.h>
|
|
#include <plat/common.h>
|
|
#include <plat/control.h>
|
|
#include <plat/timer-gp.h>
|
|
#include <asm/hardware/gic.h>
|
|
#include <asm/hardware/cache-l2x0.h>
|
|
|
|
static struct platform_device sdp4430_lcd_device = {
|
|
.name = "sdp4430_lcd",
|
|
.id = -1,
|
|
};
|
|
|
|
static struct platform_device *sdp4430_devices[] __initdata = {
|
|
&sdp4430_lcd_device,
|
|
};
|
|
|
|
static struct omap_uart_config sdp4430_uart_config __initdata = {
|
|
.enabled_uarts = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3),
|
|
};
|
|
|
|
static struct omap_lcd_config sdp4430_lcd_config __initdata = {
|
|
.ctrl_name = "internal",
|
|
};
|
|
|
|
static struct omap_board_config_kernel sdp4430_config[] __initdata = {
|
|
{ OMAP_TAG_LCD, &sdp4430_lcd_config },
|
|
};
|
|
|
|
#ifdef CONFIG_CACHE_L2X0
|
|
noinline void omap_smc1(u32 fn, u32 arg)
|
|
{
|
|
register u32 r12 asm("r12") = fn;
|
|
register u32 r0 asm("r0") = arg;
|
|
|
|
/* This is common routine cache secure monitor API used to
|
|
* modify the PL310 secure registers.
|
|
* r0 contains the value to be modified and "r12" contains
|
|
* the monitor API number. It uses few CPU registers
|
|
* internally and hence they need be backed up including
|
|
* link register "lr".
|
|
* Explicitly save r11 and r12 the compiler generated code
|
|
* won't save it.
|
|
*/
|
|
asm volatile(
|
|
"stmfd r13!, {r11,r12}\n"
|
|
"dsb\n"
|
|
"smc\n"
|
|
"ldmfd r13!, {r11,r12}\n"
|
|
: "+r" (r0), "+r" (r12)
|
|
:
|
|
: "r4", "r5", "r10", "lr", "cc");
|
|
}
|
|
EXPORT_SYMBOL(omap_smc1);
|
|
|
|
static int __init omap_l2_cache_init(void)
|
|
{
|
|
void __iomem *l2cache_base;
|
|
|
|
/* 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);
|
|
|
|
/* 32KB way size, 16-way associativity,
|
|
* parity disabled
|
|
*/
|
|
l2x0_init(l2cache_base, 0x0e050000, 0xc0000fff);
|
|
|
|
return 0;
|
|
}
|
|
early_initcall(omap_l2_cache_init);
|
|
#endif
|
|
|
|
static void __init gic_init_irq(void)
|
|
{
|
|
void __iomem *base;
|
|
|
|
/* Static mapping, never released */
|
|
base = ioremap(OMAP44XX_GIC_DIST_BASE, SZ_4K);
|
|
BUG_ON(!base);
|
|
gic_dist_init(0, base, 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);
|
|
}
|
|
|
|
static void __init omap_4430sdp_init_irq(void)
|
|
{
|
|
omap_board_config = sdp4430_config;
|
|
omap_board_config_size = ARRAY_SIZE(sdp4430_config);
|
|
omap2_init_common_hw(NULL, NULL);
|
|
#ifdef CONFIG_OMAP_32K_TIMER
|
|
omap2_gp_clockevent_set_gptimer(1);
|
|
#endif
|
|
gic_init_irq();
|
|
omap_gpio_init();
|
|
}
|
|
|
|
|
|
static void __init omap_4430sdp_init(void)
|
|
{
|
|
platform_add_devices(sdp4430_devices, ARRAY_SIZE(sdp4430_devices));
|
|
omap_serial_init();
|
|
}
|
|
|
|
static void __init omap_4430sdp_map_io(void)
|
|
{
|
|
omap2_set_globals_443x();
|
|
omap2_map_common_io();
|
|
}
|
|
|
|
MACHINE_START(OMAP_4430SDP, "OMAP4430 4430SDP board")
|
|
/* Maintainer: Santosh Shilimkar - Texas Instruments Inc */
|
|
.phys_io = 0x48000000,
|
|
.io_pg_offst = ((0xfa000000) >> 18) & 0xfffc,
|
|
.boot_params = 0x80000100,
|
|
.map_io = omap_4430sdp_map_io,
|
|
.init_irq = omap_4430sdp_init_irq,
|
|
.init_machine = omap_4430sdp_init,
|
|
.timer = &omap_timer,
|
|
MACHINE_END
|