Commit d4a67d9d authored by Gabor Juhos's avatar Gabor Juhos Committed by Ralf Baechle

MIPS: Add initial support for the Atheros AR71XX/AR724X/AR931X SoCs

This patch adds initial support for various Atheros SoCs based on the
MIPS 24Kc core. The following models are supported at the moment:

  - AR7130
  - AR7141
  - AR7161
  - AR9130
  - AR9132
  - AR7240
  - AR7241
  - AR7242

The current patch contains minimal support only, but the resulting
kernel can boot into user-space with using of an initramfs image on
various boards which are using these SoCs. Support for more built-in
devices and individual boards will be implemented in further patches.
Signed-off-by: default avatarGabor Juhos <juhosg@openwrt.org>
Signed-off-by: default avatarImre Kaloz <kaloz@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: Luis R. Rodriguez <lrodriguez@atheros.com>
Cc: Cliff Holden <Cliff.Holden@Atheros.com>
Cc: Kathy Giori <Kathy.Giori@Atheros.com>
Patchwork: https://patchwork.linux-mips.org/patch/1947/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 94bb0c1a
...@@ -2,6 +2,7 @@ ...@@ -2,6 +2,7 @@
platforms += alchemy platforms += alchemy
platforms += ar7 platforms += ar7
platforms += ath79
platforms += bcm47xx platforms += bcm47xx
platforms += bcm63xx platforms += bcm63xx
platforms += cavium-octeon platforms += cavium-octeon
......
...@@ -66,6 +66,20 @@ config AR7 ...@@ -66,6 +66,20 @@ config AR7
Support for the Texas Instruments AR7 System-on-a-Chip Support for the Texas Instruments AR7 System-on-a-Chip
family: TNETD7100, 7200 and 7300. family: TNETD7100, 7200 and 7300.
config ATH79
bool "Atheros AR71XX/AR724X/AR913X based boards"
select BOOT_RAW
select CEVT_R4K
select CSRC_R4K
select DMA_NONCOHERENT
select IRQ_CPU
select SYS_HAS_CPU_MIPS32_R2
select SYS_HAS_EARLY_PRINTK
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_BIG_ENDIAN
help
Support for the Atheros AR71XX/AR724X/AR913X SoCs.
config BCM47XX config BCM47XX
bool "Broadcom BCM47XX based boards" bool "Broadcom BCM47XX based boards"
select CEVT_R4K select CEVT_R4K
...@@ -718,6 +732,7 @@ config CAVIUM_OCTEON_REFERENCE_BOARD ...@@ -718,6 +732,7 @@ config CAVIUM_OCTEON_REFERENCE_BOARD
endchoice endchoice
source "arch/mips/alchemy/Kconfig" source "arch/mips/alchemy/Kconfig"
source "arch/mips/ath79/Kconfig"
source "arch/mips/bcm63xx/Kconfig" source "arch/mips/bcm63xx/Kconfig"
source "arch/mips/jazz/Kconfig" source "arch/mips/jazz/Kconfig"
source "arch/mips/jz4740/Kconfig" source "arch/mips/jz4740/Kconfig"
......
if ATH79
config SOC_AR71XX
def_bool n
config SOC_AR724X
def_bool n
config SOC_AR913X
def_bool n
endif
#
# Makefile for the Atheros AR71XX/AR724X/AR913X specific parts of the kernel
#
# Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
# Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
#
# 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.
obj-y := prom.o setup.o irq.o common.o clock.o
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
#
# Devices
#
obj-y += dev-common.o
#
# Atheros AR71xx/AR724x/AR913x
#
platform-$(CONFIG_ATH79) += ath79/
cflags-$(CONFIG_ATH79) += -I$(srctree)/arch/mips/include/asm/mach-ath79
load-$(CONFIG_ATH79) = 0xffffffff80060000
/*
* Atheros AR71XX/AR724X/AR913X common routines
*
* Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
*
* 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/module.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.h>
#include "common.h"
#define AR71XX_BASE_FREQ 40000000
#define AR724X_BASE_FREQ 5000000
#define AR913X_BASE_FREQ 5000000
struct clk {
unsigned long rate;
};
static struct clk ath79_ref_clk;
static struct clk ath79_cpu_clk;
static struct clk ath79_ddr_clk;
static struct clk ath79_ahb_clk;
static struct clk ath79_wdt_clk;
static struct clk ath79_uart_clk;
static void __init ar71xx_clocks_init(void)
{
u32 pll;
u32 freq;
u32 div;
ath79_ref_clk.rate = AR71XX_BASE_FREQ;
pll = ath79_pll_rr(AR71XX_PLL_REG_CPU_CONFIG);
div = ((pll >> AR71XX_PLL_DIV_SHIFT) & AR71XX_PLL_DIV_MASK) + 1;
freq = div * ath79_ref_clk.rate;
div = ((pll >> AR71XX_CPU_DIV_SHIFT) & AR71XX_CPU_DIV_MASK) + 1;
ath79_cpu_clk.rate = freq / div;
div = ((pll >> AR71XX_DDR_DIV_SHIFT) & AR71XX_DDR_DIV_MASK) + 1;
ath79_ddr_clk.rate = freq / div;
div = (((pll >> AR71XX_AHB_DIV_SHIFT) & AR71XX_AHB_DIV_MASK) + 1) * 2;
ath79_ahb_clk.rate = ath79_cpu_clk.rate / div;
ath79_wdt_clk.rate = ath79_ahb_clk.rate;
ath79_uart_clk.rate = ath79_ahb_clk.rate;
}
static void __init ar724x_clocks_init(void)
{
u32 pll;
u32 freq;
u32 div;
ath79_ref_clk.rate = AR724X_BASE_FREQ;
pll = ath79_pll_rr(AR724X_PLL_REG_CPU_CONFIG);
div = ((pll >> AR724X_PLL_DIV_SHIFT) & AR724X_PLL_DIV_MASK);
freq = div * ath79_ref_clk.rate;
div = ((pll >> AR724X_PLL_REF_DIV_SHIFT) & AR724X_PLL_REF_DIV_MASK);
freq *= div;
ath79_cpu_clk.rate = freq;
div = ((pll >> AR724X_DDR_DIV_SHIFT) & AR724X_DDR_DIV_MASK) + 1;
ath79_ddr_clk.rate = freq / div;
div = (((pll >> AR724X_AHB_DIV_SHIFT) & AR724X_AHB_DIV_MASK) + 1) * 2;
ath79_ahb_clk.rate = ath79_cpu_clk.rate / div;
ath79_wdt_clk.rate = ath79_ahb_clk.rate;
ath79_uart_clk.rate = ath79_ahb_clk.rate;
}
static void __init ar913x_clocks_init(void)
{
u32 pll;
u32 freq;
u32 div;
ath79_ref_clk.rate = AR913X_BASE_FREQ;
pll = ath79_pll_rr(AR913X_PLL_REG_CPU_CONFIG);
div = ((pll >> AR913X_PLL_DIV_SHIFT) & AR913X_PLL_DIV_MASK);
freq = div * ath79_ref_clk.rate;
ath79_cpu_clk.rate = freq;
div = ((pll >> AR913X_DDR_DIV_SHIFT) & AR913X_DDR_DIV_MASK) + 1;
ath79_ddr_clk.rate = freq / div;
div = (((pll >> AR913X_AHB_DIV_SHIFT) & AR913X_AHB_DIV_MASK) + 1) * 2;
ath79_ahb_clk.rate = ath79_cpu_clk.rate / div;
ath79_wdt_clk.rate = ath79_ahb_clk.rate;
ath79_uart_clk.rate = ath79_ahb_clk.rate;
}
void __init ath79_clocks_init(void)
{
if (soc_is_ar71xx())
ar71xx_clocks_init();
else if (soc_is_ar724x())
ar724x_clocks_init();
else if (soc_is_ar913x())
ar913x_clocks_init();
else
BUG();
pr_info("Clocks: CPU:%lu.%03luMHz, DDR:%lu.%03luMHz, AHB:%lu.%03luMHz, "
"Ref:%lu.%03luMHz",
ath79_cpu_clk.rate / 1000000,
(ath79_cpu_clk.rate / 1000) % 1000,
ath79_ddr_clk.rate / 1000000,
(ath79_ddr_clk.rate / 1000) % 1000,
ath79_ahb_clk.rate / 1000000,
(ath79_ahb_clk.rate / 1000) % 1000,
ath79_ref_clk.rate / 1000000,
(ath79_ref_clk.rate / 1000) % 1000);
}
/*
* Linux clock API
*/
struct clk *clk_get(struct device *dev, const char *id)
{
if (!strcmp(id, "ref"))
return &ath79_ref_clk;
if (!strcmp(id, "cpu"))
return &ath79_cpu_clk;
if (!strcmp(id, "ddr"))
return &ath79_ddr_clk;
if (!strcmp(id, "ahb"))
return &ath79_ahb_clk;
if (!strcmp(id, "wdt"))
return &ath79_wdt_clk;
if (!strcmp(id, "uart"))
return &ath79_uart_clk;
return ERR_PTR(-ENOENT);
}
EXPORT_SYMBOL(clk_get);
int clk_enable(struct clk *clk)
{
return 0;
}
EXPORT_SYMBOL(clk_enable);
void clk_disable(struct clk *clk)
{
}
EXPORT_SYMBOL(clk_disable);
unsigned long clk_get_rate(struct clk *clk)
{
return clk->rate;
}
EXPORT_SYMBOL(clk_get_rate);
void clk_put(struct clk *clk)
{
}
EXPORT_SYMBOL(clk_put);
/*
* Atheros AR71XX/AR724X/AR913X common routines
*
* Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* 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/module.h>
#include <linux/types.h>
#include <linux/spinlock.h>
#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.h>
#include "common.h"
static DEFINE_SPINLOCK(ath79_device_reset_lock);
u32 ath79_cpu_freq;
EXPORT_SYMBOL_GPL(ath79_cpu_freq);
u32 ath79_ahb_freq;
EXPORT_SYMBOL_GPL(ath79_ahb_freq);
u32 ath79_ddr_freq;
EXPORT_SYMBOL_GPL(ath79_ddr_freq);
enum ath79_soc_type ath79_soc;
void __iomem *ath79_pll_base;
void __iomem *ath79_reset_base;
EXPORT_SYMBOL_GPL(ath79_reset_base);
void __iomem *ath79_ddr_base;
void ath79_ddr_wb_flush(u32 reg)
{
void __iomem *flush_reg = ath79_ddr_base + reg;
/* Flush the DDR write buffer. */
__raw_writel(0x1, flush_reg);
while (__raw_readl(flush_reg) & 0x1)
;
/* It must be run twice. */
__raw_writel(0x1, flush_reg);
while (__raw_readl(flush_reg) & 0x1)
;
}
EXPORT_SYMBOL_GPL(ath79_ddr_wb_flush);
void ath79_device_reset_set(u32 mask)
{
unsigned long flags;
u32 reg;
u32 t;
if (soc_is_ar71xx())
reg = AR71XX_RESET_REG_RESET_MODULE;
else if (soc_is_ar724x())
reg = AR724X_RESET_REG_RESET_MODULE;
else if (soc_is_ar913x())
reg = AR913X_RESET_REG_RESET_MODULE;
else
BUG();
spin_lock_irqsave(&ath79_device_reset_lock, flags);
t = ath79_reset_rr(reg);
ath79_reset_wr(reg, t | mask);
spin_unlock_irqrestore(&ath79_device_reset_lock, flags);
}
EXPORT_SYMBOL_GPL(ath79_device_reset_set);
void ath79_device_reset_clear(u32 mask)
{
unsigned long flags;
u32 reg;
u32 t;
if (soc_is_ar71xx())
reg = AR71XX_RESET_REG_RESET_MODULE;
else if (soc_is_ar724x())
reg = AR724X_RESET_REG_RESET_MODULE;
else if (soc_is_ar913x())
reg = AR913X_RESET_REG_RESET_MODULE;
else
BUG();
spin_lock_irqsave(&ath79_device_reset_lock, flags);
t = ath79_reset_rr(reg);
ath79_reset_wr(reg, t & ~mask);
spin_unlock_irqrestore(&ath79_device_reset_lock, flags);
}
EXPORT_SYMBOL_GPL(ath79_device_reset_clear);
/*
* Atheros AR71XX/AR724X/AR913X common definitions
*
* Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* Parts of this file are based on Atheros' 2.6.15 BSP
*
* 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.
*/
#ifndef __ATH79_COMMON_H
#define __ATH79_COMMON_H
#include <linux/types.h>
#include <linux/init.h>
#define ATH79_MEM_SIZE_MIN (2 * 1024 * 1024)
#define ATH79_MEM_SIZE_MAX (128 * 1024 * 1024)
void ath79_clocks_init(void);
void ath79_ddr_wb_flush(unsigned int reg);
#endif /* __ATH79_COMMON_H */
/*
* Atheros AR71XX/AR724X/AR913X common devices
*
* Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* Parts of this file are based on Atheros' 2.6.15 BSP
*
* 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/serial_8250.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.h>
#include "common.h"
#include "dev-common.h"
static struct resource ath79_uart_resources[] = {
{
.start = AR71XX_UART_BASE,
.end = AR71XX_UART_BASE + AR71XX_UART_SIZE - 1,
.flags = IORESOURCE_MEM,
},
};
#define AR71XX_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP)
static struct plat_serial8250_port ath79_uart_data[] = {
{
.mapbase = AR71XX_UART_BASE,
.irq = ATH79_MISC_IRQ_UART,
.flags = AR71XX_UART_FLAGS,
.iotype = UPIO_MEM32,
.regshift = 2,
}, {
/* terminating entry */
}
};
static struct platform_device ath79_uart_device = {
.name = "serial8250",
.id = PLAT8250_DEV_PLATFORM,
.resource = ath79_uart_resources,
.num_resources = ARRAY_SIZE(ath79_uart_resources),
.dev = {
.platform_data = ath79_uart_data
},
};
void __init ath79_register_uart(void)
{
struct clk *clk;
clk = clk_get(NULL, "uart");
if (IS_ERR(clk))
panic("unable to get UART clock, err=%ld", PTR_ERR(clk));
ath79_uart_data[0].uartclk = clk_get_rate(clk);
platform_device_register(&ath79_uart_device);
}
/*
* Atheros AR71XX/AR724X/AR913X common devices
*
* Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* 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.
*/
#ifndef _ATH79_DEV_COMMON_H
#define _ATH79_DEV_COMMON_H
void ath79_register_uart(void);
#endif /* _ATH79_DEV_COMMON_H */
/*
* Atheros AR71XX/AR724X/AR913X SoC early printk support
*
* Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* 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/io.h>
#include <linux/serial_reg.h>
#include <asm/addrspace.h>
#include <asm/mach-ath79/ar71xx_regs.h>
static inline void prom_wait_thre(void __iomem *base)
{
u32 lsr;
do {
lsr = __raw_readl(base + UART_LSR * 4);
if (lsr & UART_LSR_THRE)
break;
} while (1);
}
void prom_putchar(unsigned char ch)
{
void __iomem *base = (void __iomem *)(KSEG1ADDR(AR71XX_UART_BASE));
prom_wait_thre(base);
__raw_writel(ch, base + UART_TX * 4);
prom_wait_thre(base);
}
/*
* Atheros AR71xx/AR724x/AR913x specific interrupt handling
*
* Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* Parts of this file are based on Atheros' 2.6.15 BSP
*
* 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/interrupt.h>
#include <linux/irq.h>
#include <asm/irq_cpu.h>
#include <asm/mipsregs.h>
#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.h>
#include "common.h"
static unsigned int ath79_ip2_flush_reg;
static unsigned int ath79_ip3_flush_reg;
static void ath79_misc_irq_handler(unsigned int irq, struct irq_desc *desc)
{
void __iomem *base = ath79_reset_base;
u32 pending;
pending = __raw_readl(base + AR71XX_RESET_REG_MISC_INT_STATUS) &
__raw_readl(base + AR71XX_RESET_REG_MISC_INT_ENABLE);
if (pending & MISC_INT_UART)
generic_handle_irq(ATH79_MISC_IRQ_UART);
else if (pending & MISC_INT_DMA)
generic_handle_irq(ATH79_MISC_IRQ_DMA);
else if (pending & MISC_INT_PERFC)
generic_handle_irq(ATH79_MISC_IRQ_PERFC);
else if (pending & MISC_INT_TIMER)
generic_handle_irq(ATH79_MISC_IRQ_TIMER);
else if (pending & MISC_INT_OHCI)
generic_handle_irq(ATH79_MISC_IRQ_OHCI);
else if (pending & MISC_INT_ERROR)
generic_handle_irq(ATH79_MISC_IRQ_ERROR);
else if (pending & MISC_INT_GPIO)
generic_handle_irq(ATH79_MISC_IRQ_GPIO);
else if (pending & MISC_INT_WDOG)
generic_handle_irq(ATH79_MISC_IRQ_WDOG);
else
spurious_interrupt();
}
static void ar71xx_misc_irq_unmask(unsigned int irq)
{
void __iomem *base = ath79_reset_base;
u32 t;
irq -= ATH79_MISC_IRQ_BASE;
t = __raw_readl(base + AR71XX_RESET_REG_MISC_INT_ENABLE);
__raw_writel(t | (1 << irq), base + AR71XX_RESET_REG_MISC_INT_ENABLE);
/* flush write */
__raw_readl(base + AR71XX_RESET_REG_MISC_INT_ENABLE);
}
static void ar71xx_misc_irq_mask(unsigned int irq)
{
void __iomem *base = ath79_reset_base;
u32 t;
irq -= ATH79_MISC_IRQ_BASE;
t = __raw_readl(base + AR71XX_RESET_REG_MISC_INT_ENABLE);
__raw_writel(t & ~(1 << irq), base + AR71XX_RESET_REG_MISC_INT_ENABLE);
/* flush write */
__raw_readl(base + AR71XX_RESET_REG_MISC_INT_ENABLE);
}
static void ar724x_misc_irq_ack(unsigned int irq)
{
void __iomem *base = ath79_reset_base;
u32 t;
irq -= ATH79_MISC_IRQ_BASE;
t = __raw_readl(base + AR71XX_RESET_REG_MISC_INT_STATUS);
__raw_writel(t & ~(1 << irq), base + AR71XX_RESET_REG_MISC_INT_STATUS);
/* flush write */
__raw_readl(base + AR71XX_RESET_REG_MISC_INT_STATUS);
}
static struct irq_chip ath79_misc_irq_chip = {
.name = "MISC",
.unmask = ar71xx_misc_irq_unmask,
.mask = ar71xx_misc_irq_mask,
};
static void __init ath79_misc_irq_init(void)
{
void __iomem *base = ath79_reset_base;
int i;
__raw_writel(0, base + AR71XX_RESET_REG_MISC_INT_ENABLE);
__raw_writel(0, base + AR71XX_RESET_REG_MISC_INT_STATUS);
if (soc_is_ar71xx() || soc_is_ar913x())
ath79_misc_irq_chip.mask_ack = ar71xx_misc_irq_mask;
else if (soc_is_ar724x())
ath79_misc_irq_chip.ack = ar724x_misc_irq_ack;
else
BUG();
for (i = ATH79_MISC_IRQ_BASE;
i < ATH79_MISC_IRQ_BASE + ATH79_MISC_IRQ_COUNT; i++) {
irq_desc[i].status = IRQ_DISABLED;
set_irq_chip_and_handler(i, &ath79_misc_irq_chip,
handle_level_irq);
}
set_irq_chained_handler(ATH79_CPU_IRQ_MISC, ath79_misc_irq_handler);
}
asmlinkage void plat_irq_dispatch(void)
{
unsigned long pending;
pending = read_c0_status() & read_c0_cause() & ST0_IM;
if (pending & STATUSF_IP7)
do_IRQ(ATH79_CPU_IRQ_TIMER);
else if (pending & STATUSF_IP2) {
ath79_ddr_wb_flush(ath79_ip2_flush_reg);
do_IRQ(ATH79_CPU_IRQ_IP2);
}
else if (pending & STATUSF_IP4)
do_IRQ(ATH79_CPU_IRQ_GE0);
else if (pending & STATUSF_IP5)
do_IRQ(ATH79_CPU_IRQ_GE1);
else if (pending & STATUSF_IP3) {
ath79_ddr_wb_flush(ath79_ip3_flush_reg);
do_IRQ(ATH79_CPU_IRQ_USB);
}
else if (pending & STATUSF_IP6)
do_IRQ(ATH79_CPU_IRQ_MISC);
else
spurious_interrupt();
}
void __init arch_init_irq(void)
{
if (soc_is_ar71xx()) {
ath79_ip2_flush_reg = AR71XX_DDR_REG_FLUSH_PCI;
ath79_ip3_flush_reg = AR71XX_DDR_REG_FLUSH_USB;
} else if (soc_is_ar724x()) {
ath79_ip2_flush_reg = AR724X_DDR_REG_FLUSH_PCIE;
ath79_ip3_flush_reg = AR724X_DDR_REG_FLUSH_USB;
} else if (soc_is_ar913x()) {
ath79_ip2_flush_reg = AR913X_DDR_REG_FLUSH_WMAC;
ath79_ip3_flush_reg = AR913X_DDR_REG_FLUSH_USB;
} else
BUG();
cp0_perfcount_irq = ATH79_MISC_IRQ_PERFC;
mips_cpu_irq_init();
ath79_misc_irq_init();
}
/*
* Atheros AR71XX/AR724X/AR913X specific prom routines
*
* Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* 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/string.h>
#include <asm/bootinfo.h>
#include <asm/addrspace.h>
#include "common.h"
static inline int is_valid_ram_addr(void *addr)
{
if (((u32) addr > KSEG0) &&
((u32) addr < (KSEG0 + ATH79_MEM_SIZE_MAX)))
return 1;
if (((u32) addr > KSEG1) &&
((u32) addr < (KSEG1 + ATH79_MEM_SIZE_MAX)))
return 1;
return 0;
}
static __init void ath79_prom_init_cmdline(int argc, char **argv)
{
int i;
if (!is_valid_ram_addr(argv))
return;
for (i = 0; i < argc; i++)
if (is_valid_ram_addr(argv[i])) {
strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
strlcat(arcs_cmdline, argv[i], sizeof(arcs_cmdline));
}
}
void __init prom_init(void)
{
ath79_prom_init_cmdline(fw_arg0, (char **)fw_arg1);
}
void __init prom_free_prom_memory(void)
{
/* We do not have to prom memory to free */
}
/*
* Atheros AR71XX/AR724X/AR913X specific setup
*
* Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* Parts of this file are based on Atheros' 2.6.15 BSP
*
* 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/bootmem.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <asm/bootinfo.h>
#include <asm/time.h> /* for mips_hpt_frequency */
#include <asm/reboot.h> /* for _machine_{restart,halt} */
#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.h>
#include "common.h"
#include "dev-common.h"
#define ATH79_SYS_TYPE_LEN 64
#define AR71XX_BASE_FREQ 40000000
#define AR724X_BASE_FREQ 5000000
#define AR913X_BASE_FREQ 5000000
static char ath79_sys_type[ATH79_SYS_TYPE_LEN];
static void ath79_restart(char *command)
{
ath79_device_reset_set(AR71XX_RESET_FULL_CHIP);
for (;;)
if (cpu_wait)
cpu_wait();
}
static void ath79_halt(void)
{
while (1)
cpu_wait();
}
static void __init ath79_detect_mem_size(void)
{
unsigned long size;
for (size = ATH79_MEM_SIZE_MIN; size < ATH79_MEM_SIZE_MAX;
size <<= 1) {
if (!memcmp(ath79_detect_mem_size,
ath79_detect_mem_size + size, 1024))
break;
}
add_memory_region(0, size, BOOT_MEM_RAM);
}
static void __init ath79_detect_sys_type(void)
{
char *chip = "????";
u32 id;
u32 major;
u32 minor;
u32 rev = 0;
id = ath79_reset_rr(AR71XX_RESET_REG_REV_ID);
major = id & REV_ID_MAJOR_MASK;
switch (major) {
case REV_ID_MAJOR_AR71XX:
minor = id & AR71XX_REV_ID_MINOR_MASK;
rev = id >> AR71XX_REV_ID_REVISION_SHIFT;
rev &= AR71XX_REV_ID_REVISION_MASK;
switch (minor) {
case AR71XX_REV_ID_MINOR_AR7130:
ath79_soc = ATH79_SOC_AR7130;
chip = "7130";
break;
case AR71XX_REV_ID_MINOR_AR7141:
ath79_soc = ATH79_SOC_AR7141;
chip = "7141";
break;
case AR71XX_REV_ID_MINOR_AR7161:
ath79_soc = ATH79_SOC_AR7161;
chip = "7161";
break;
}
break;
case REV_ID_MAJOR_AR7240:
ath79_soc = ATH79_SOC_AR7240;
chip = "7240";
rev = (id & AR724X_REV_ID_REVISION_MASK);
break;
case REV_ID_MAJOR_AR7241:
ath79_soc = ATH79_SOC_AR7241;
chip = "7241";
rev = (id & AR724X_REV_ID_REVISION_MASK);
break;
case REV_ID_MAJOR_AR7242:
ath79_soc = ATH79_SOC_AR7242;
chip = "7242";
rev = (id & AR724X_REV_ID_REVISION_MASK);
break;
case REV_ID_MAJOR_AR913X:
minor = id & AR913X_REV_ID_MINOR_MASK;
rev = id >> AR913X_REV_ID_REVISION_SHIFT;
rev &= AR913X_REV_ID_REVISION_MASK;
switch (minor) {
case AR913X_REV_ID_MINOR_AR9130:
ath79_soc = ATH79_SOC_AR9130;
chip = "9130";
break;
case AR913X_REV_ID_MINOR_AR9132:
ath79_soc = ATH79_SOC_AR9132;
chip = "9132";
break;
}
break;
default:
panic("ath79: unknown SoC, id:0x%08x\n", id);
}
sprintf(ath79_sys_type, "Atheros AR%s rev %u", chip, rev);
pr_info("SoC: %s\n", ath79_sys_type);
}
const char *get_system_type(void)
{
return ath79_sys_type;
}
unsigned int __cpuinit get_c0_compare_int(void)
{
return CP0_LEGACY_COMPARE_IRQ;
}
void __init plat_mem_setup(void)
{
set_io_port_base(KSEG1);
ath79_reset_base = ioremap_nocache(AR71XX_RESET_BASE,
AR71XX_RESET_SIZE);
ath79_pll_base = ioremap_nocache(AR71XX_PLL_BASE,
AR71XX_PLL_SIZE);
ath79_ddr_base = ioremap_nocache(AR71XX_DDR_CTRL_BASE,
AR71XX_DDR_CTRL_SIZE);
ath79_detect_sys_type();
ath79_detect_mem_size();
ath79_clocks_init();
_machine_restart = ath79_restart;
_machine_halt = ath79_halt;
pm_power_off = ath79_halt;
}
void __init plat_time_init(void)
{
struct clk *clk;
clk = clk_get(NULL, "cpu");
if (IS_ERR(clk))
panic("unable to get CPU clock, err=%ld", PTR_ERR(clk));
mips_hpt_frequency = clk_get_rate(clk) / 2;
}
static int __init ath79_setup(void)
{
ath79_register_uart();
return 0;
}
arch_initcall(ath79_setup);
/*
* Atheros AR71XX/AR724X/AR913X SoC register definitions
*
* Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* Parts of this file are based on Atheros' 2.6.15 BSP
*
* 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.
*/
#ifndef __ASM_MACH_AR71XX_REGS_H
#define __ASM_MACH_AR71XX_REGS_H
#include <linux/types.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/bitops.h>
#define AR71XX_APB_BASE 0x18000000
#define AR71XX_DDR_CTRL_BASE (AR71XX_APB_BASE + 0x00000000)
#define AR71XX_DDR_CTRL_SIZE 0x100
#define AR71XX_UART_BASE (AR71XX_APB_BASE + 0x00020000)
#define AR71XX_UART_SIZE 0x100
#define AR71XX_PLL_BASE (AR71XX_APB_BASE + 0x00050000)
#define AR71XX_PLL_SIZE 0x100
#define AR71XX_RESET_BASE (AR71XX_APB_BASE + 0x00060000)
#define AR71XX_RESET_SIZE 0x100
/*
* DDR_CTRL block
*/
#define AR71XX_DDR_REG_PCI_WIN0 0x7c
#define AR71XX_DDR_REG_PCI_WIN1 0x80
#define AR71XX_DDR_REG_PCI_WIN2 0x84
#define AR71XX_DDR_REG_PCI_WIN3 0x88
#define AR71XX_DDR_REG_PCI_WIN4 0x8c
#define AR71XX_DDR_REG_PCI_WIN5 0x90
#define AR71XX_DDR_REG_PCI_WIN6 0x94
#define AR71XX_DDR_REG_PCI_WIN7 0x98
#define AR71XX_DDR_REG_FLUSH_GE0 0x9c
#define AR71XX_DDR_REG_FLUSH_GE1 0xa0
#define AR71XX_DDR_REG_FLUSH_USB 0xa4
#define AR71XX_DDR_REG_FLUSH_PCI 0xa8
#define AR724X_DDR_REG_FLUSH_GE0 0x7c
#define AR724X_DDR_REG_FLUSH_GE1 0x80
#define AR724X_DDR_REG_FLUSH_USB 0x84
#define AR724X_DDR_REG_FLUSH_PCIE 0x88
#define AR913X_DDR_REG_FLUSH_GE0 0x7c
#define AR913X_DDR_REG_FLUSH_GE1 0x80
#define AR913X_DDR_REG_FLUSH_USB 0x84
#define AR913X_DDR_REG_FLUSH_WMAC 0x88
/*
* PLL block
*/
#define AR71XX_PLL_REG_CPU_CONFIG 0x00
#define AR71XX_PLL_REG_SEC_CONFIG 0x04
#define AR71XX_PLL_REG_ETH0_INT_CLOCK 0x10
#define AR71XX_PLL_REG_ETH1_INT_CLOCK 0x14
#define AR71XX_PLL_DIV_SHIFT 3
#define AR71XX_PLL_DIV_MASK 0x1f
#define AR71XX_CPU_DIV_SHIFT 16
#define AR71XX_CPU_DIV_MASK 0x3
#define AR71XX_DDR_DIV_SHIFT 18
#define AR71XX_DDR_DIV_MASK 0x3
#define AR71XX_AHB_DIV_SHIFT 20
#define AR71XX_AHB_DIV_MASK 0x7
#define AR724X_PLL_REG_CPU_CONFIG 0x00
#define AR724X_PLL_REG_PCIE_CONFIG 0x18
#define AR724X_PLL_DIV_SHIFT 0
#define AR724X_PLL_DIV_MASK 0x3ff
#define AR724X_PLL_REF_DIV_SHIFT 10
#define AR724X_PLL_REF_DIV_MASK 0xf
#define AR724X_AHB_DIV_SHIFT 19
#define AR724X_AHB_DIV_MASK 0x1
#define AR724X_DDR_DIV_SHIFT 22
#define AR724X_DDR_DIV_MASK 0x3
#define AR913X_PLL_REG_CPU_CONFIG 0x00
#define AR913X_PLL_REG_ETH_CONFIG 0x04
#define AR913X_PLL_REG_ETH0_INT_CLOCK 0x14
#define AR913X_PLL_REG_ETH1_INT_CLOCK 0x18
#define AR913X_PLL_DIV_SHIFT 0
#define AR913X_PLL_DIV_MASK 0x3ff
#define AR913X_DDR_DIV_SHIFT 22
#define AR913X_DDR_DIV_MASK 0x3
#define AR913X_AHB_DIV_SHIFT 19
#define AR913X_AHB_DIV_MASK 0x1
/*
* RESET block
*/
#define AR71XX_RESET_REG_TIMER 0x00
#define AR71XX_RESET_REG_TIMER_RELOAD 0x04
#define AR71XX_RESET_REG_WDOG_CTRL 0x08
#define AR71XX_RESET_REG_WDOG 0x0c
#define AR71XX_RESET_REG_MISC_INT_STATUS 0x10
#define AR71XX_RESET_REG_MISC_INT_ENABLE 0x14
#define AR71XX_RESET_REG_PCI_INT_STATUS 0x18
#define AR71XX_RESET_REG_PCI_INT_ENABLE 0x1c
#define AR71XX_RESET_REG_GLOBAL_INT_STATUS 0x20
#define AR71XX_RESET_REG_RESET_MODULE 0x24
#define AR71XX_RESET_REG_PERFC_CTRL 0x2c
#define AR71XX_RESET_REG_PERFC0 0x30
#define AR71XX_RESET_REG_PERFC1 0x34
#define AR71XX_RESET_REG_REV_ID 0x90
#define AR913X_RESET_REG_GLOBAL_INT_STATUS 0x18
#define AR913X_RESET_REG_RESET_MODULE 0x1c
#define AR913X_RESET_REG_PERF_CTRL 0x20
#define AR913X_RESET_REG_PERFC0 0x24
#define AR913X_RESET_REG_PERFC1 0x28
#define AR724X_RESET_REG_RESET_MODULE 0x1c
#define MISC_INT_DMA BIT(7)
#define MISC_INT_OHCI BIT(6)
#define MISC_INT_PERFC BIT(5)
#define MISC_INT_WDOG BIT(4)
#define MISC_INT_UART BIT(3)
#define MISC_INT_GPIO BIT(2)
#define MISC_INT_ERROR BIT(1)
#define MISC_INT_TIMER BIT(0)
#define AR71XX_RESET_EXTERNAL BIT(28)
#define AR71XX_RESET_FULL_CHIP BIT(24)
#define AR71XX_RESET_CPU_NMI BIT(21)
#define AR71XX_RESET_CPU_COLD BIT(20)
#define AR71XX_RESET_DMA BIT(19)
#define AR71XX_RESET_SLIC BIT(18)
#define AR71XX_RESET_STEREO BIT(17)
#define AR71XX_RESET_DDR BIT(16)
#define AR71XX_RESET_GE1_MAC BIT(13)
#define AR71XX_RESET_GE1_PHY BIT(12)
#define AR71XX_RESET_USBSUS_OVERRIDE BIT(10)
#define AR71XX_RESET_GE0_MAC BIT(9)
#define AR71XX_RESET_GE0_PHY BIT(8)
#define AR71XX_RESET_USB_OHCI_DLL BIT(6)
#define AR71XX_RESET_USB_HOST BIT(5)
#define AR71XX_RESET_USB_PHY BIT(4)
#define AR71XX_RESET_PCI_BUS BIT(1)
#define AR71XX_RESET_PCI_CORE BIT(0)
#define AR724X_RESET_GE1_MDIO BIT(23)
#define AR724X_RESET_GE0_MDIO BIT(22)
#define AR724X_RESET_PCIE_PHY_SERIAL BIT(10)
#define AR724X_RESET_PCIE_PHY BIT(7)
#define AR724X_RESET_PCIE BIT(6)
#define AR724X_RESET_OHCI_DLL BIT(3)
#define AR913X_RESET_AMBA2WMAC BIT(22)
#define REV_ID_MAJOR_MASK 0xfff0
#define REV_ID_MAJOR_AR71XX 0x00a0
#define REV_ID_MAJOR_AR913X 0x00b0
#define REV_ID_MAJOR_AR7240 0x00c0
#define REV_ID_MAJOR_AR7241 0x0100
#define REV_ID_MAJOR_AR7242 0x1100
#define AR71XX_REV_ID_MINOR_MASK 0x3
#define AR71XX_REV_ID_MINOR_AR7130 0x0
#define AR71XX_REV_ID_MINOR_AR7141 0x1
#define AR71XX_REV_ID_MINOR_AR7161 0x2
#define AR71XX_REV_ID_REVISION_MASK 0x3
#define AR71XX_REV_ID_REVISION_SHIFT 2
#define AR913X_REV_ID_MINOR_MASK 0x3
#define AR913X_REV_ID_MINOR_AR9130 0x0
#define AR913X_REV_ID_MINOR_AR9132 0x1
#define AR913X_REV_ID_REVISION_MASK 0x3
#define AR913X_REV_ID_REVISION_SHIFT 2
#define AR724X_REV_ID_REVISION_MASK 0x3
/*
* SPI block
*/
#define AR71XX_SPI_REG_FS 0x00 /* Function Select */
#define AR71XX_SPI_REG_CTRL 0x04 /* SPI Control */
#define AR71XX_SPI_REG_IOC 0x08 /* SPI I/O Control */
#define AR71XX_SPI_REG_RDS 0x0c /* Read Data Shift */
#define AR71XX_SPI_FS_GPIO BIT(0) /* Enable GPIO mode */
#define AR71XX_SPI_CTRL_RD BIT(6) /* Remap Disable */
#define AR71XX_SPI_CTRL_DIV_MASK 0x3f
#define AR71XX_SPI_IOC_DO BIT(0) /* Data Out pin */
#define AR71XX_SPI_IOC_CLK BIT(8) /* CLK pin */
#define AR71XX_SPI_IOC_CS(n) BIT(16 + (n))
#define AR71XX_SPI_IOC_CS0 AR71XX_SPI_IOC_CS(0)
#define AR71XX_SPI_IOC_CS1 AR71XX_SPI_IOC_CS(1)
#define AR71XX_SPI_IOC_CS2 AR71XX_SPI_IOC_CS(2)
#define AR71XX_SPI_IOC_CS_ALL (AR71XX_SPI_IOC_CS0 | AR71XX_SPI_IOC_CS1 | \
AR71XX_SPI_IOC_CS2)
#endif /* __ASM_MACH_AR71XX_REGS_H */
/*
* Atheros AR71XX/AR724X/AR913X common definitions
*
* Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* Parts of this file are based on Atheros' 2.6.15 BSP
*
* 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.
*/
#ifndef __ASM_MACH_ATH79_H
#define __ASM_MACH_ATH79_H
#include <linux/types.h>
#include <linux/io.h>
enum ath79_soc_type {
ATH79_SOC_UNKNOWN,
ATH79_SOC_AR7130,
ATH79_SOC_AR7141,
ATH79_SOC_AR7161,
ATH79_SOC_AR7240,
ATH79_SOC_AR7241,
ATH79_SOC_AR7242,
ATH79_SOC_AR9130,
ATH79_SOC_AR9132
};
extern enum ath79_soc_type ath79_soc;
static inline int soc_is_ar71xx(void)
{
return (ath79_soc == ATH79_SOC_AR7130 ||
ath79_soc == ATH79_SOC_AR7141 ||
ath79_soc == ATH79_SOC_AR7161);
}
static inline int soc_is_ar724x(void)
{
return (ath79_soc == ATH79_SOC_AR7240 ||
ath79_soc == ATH79_SOC_AR7241 ||
ath79_soc == ATH79_SOC_AR7242);
}
static inline int soc_is_ar7240(void)
{
return (ath79_soc == ATH79_SOC_AR7240);
}
static inline int soc_is_ar7241(void)
{
return (ath79_soc == ATH79_SOC_AR7241);
}
static inline int soc_is_ar7242(void)
{
return (ath79_soc == ATH79_SOC_AR7242);
}
static inline int soc_is_ar913x(void)
{
return (ath79_soc == ATH79_SOC_AR9130 ||
ath79_soc == ATH79_SOC_AR9132);
}
extern void __iomem *ath79_ddr_base;
extern void __iomem *ath79_pll_base;
extern void __iomem *ath79_reset_base;
static inline void ath79_pll_wr(unsigned reg, u32 val)
{
__raw_writel(val, ath79_pll_base + reg);
}
static inline u32 ath79_pll_rr(unsigned reg)
{
return __raw_readl(ath79_pll_base + reg);
}
static inline void ath79_reset_wr(unsigned reg, u32 val)
{
__raw_writel(val, ath79_reset_base + reg);
}
static inline u32 ath79_reset_rr(unsigned reg)
{
return __raw_readl(ath79_reset_base + reg);
}
void ath79_device_reset_set(u32 mask);
void ath79_device_reset_clear(u32 mask);
#endif /* __ASM_MACH_ATH79_H */
/*
* Atheros AR71XX/AR724X/AR913X specific CPU feature overrides
*
* Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* This file was derived from: include/asm-mips/cpu-features.h
* Copyright (C) 2003, 2004 Ralf Baechle
* Copyright (C) 2004 Maciej W. Rozycki
*
* 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.
*
*/
#ifndef __ASM_MACH_ATH79_CPU_FEATURE_OVERRIDES_H
#define __ASM_MACH_ATH79_CPU_FEATURE_OVERRIDES_H
#define cpu_has_tlb 1
#define cpu_has_4kex 1
#define cpu_has_3k_cache 0
#define cpu_has_4k_cache 1
#define cpu_has_tx39_cache 0
#define cpu_has_sb1_cache 0
#define cpu_has_fpu 0
#define cpu_has_32fpr 0
#define cpu_has_counter 1
#define cpu_has_watch 1
#define cpu_has_divec 1
#define cpu_has_prefetch 1
#define cpu_has_ejtag 1
#define cpu_has_llsc 1
#define cpu_has_mips16 1
#define cpu_has_mdmx 0
#define cpu_has_mips3d 0
#define cpu_has_smartmips 0
#define cpu_has_mips32r1 1
#define cpu_has_mips32r2 1
#define cpu_has_mips64r1 0
#define cpu_has_mips64r2 0
#define cpu_has_dsp 0
#define cpu_has_mipsmt 0
#define cpu_has_64bits 0
#define cpu_has_64bit_zero_reg 0
#define cpu_has_64bit_gp_regs 0
#define cpu_has_64bit_addresses 0
#define cpu_dcache_line_size() 32
#define cpu_icache_line_size() 32
#endif /* __ASM_MACH_ATH79_CPU_FEATURE_OVERRIDES_H */
/*
* Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* 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.
*/
#ifndef __ASM_MACH_ATH79_IRQ_H
#define __ASM_MACH_ATH79_IRQ_H
#define MIPS_CPU_IRQ_BASE 0
#define NR_IRQS 16
#define ATH79_MISC_IRQ_BASE 8
#define ATH79_MISC_IRQ_COUNT 8
#define ATH79_CPU_IRQ_IP2 (MIPS_CPU_IRQ_BASE + 2)
#define ATH79_CPU_IRQ_USB (MIPS_CPU_IRQ_BASE + 3)
#define ATH79_CPU_IRQ_GE0 (MIPS_CPU_IRQ_BASE + 4)
#define ATH79_CPU_IRQ_GE1 (MIPS_CPU_IRQ_BASE + 5)
#define ATH79_CPU_IRQ_MISC (MIPS_CPU_IRQ_BASE + 6)
#define ATH79_CPU_IRQ_TIMER (MIPS_CPU_IRQ_BASE + 7)
#define ATH79_MISC_IRQ_TIMER (ATH79_MISC_IRQ_BASE + 0)
#define ATH79_MISC_IRQ_ERROR (ATH79_MISC_IRQ_BASE + 1)
#define ATH79_MISC_IRQ_GPIO (ATH79_MISC_IRQ_BASE + 2)
#define ATH79_MISC_IRQ_UART (ATH79_MISC_IRQ_BASE + 3)
#define ATH79_MISC_IRQ_WDOG (ATH79_MISC_IRQ_BASE + 4)
#define ATH79_MISC_IRQ_PERFC (ATH79_MISC_IRQ_BASE + 5)
#define ATH79_MISC_IRQ_OHCI (ATH79_MISC_IRQ_BASE + 6)
#define ATH79_MISC_IRQ_DMA (ATH79_MISC_IRQ_BASE + 7)
#include_next <irq.h>
#endif /* __ASM_MACH_ATH79_IRQ_H */
/*
* Atheros AR71XX/AR724X/AR913X specific kernel entry setup
*
* Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
*
* 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.
*
*/
#ifndef __ASM_MACH_ATH79_KERNEL_ENTRY_H
#define __ASM_MACH_ATH79_KERNEL_ENTRY_H
/*
* Some bootloaders set the 'Kseg0 coherency algorithm' to
* 'Cacheable, noncoherent, write-through, no write allocate'
* and this cause performance issues. Let's go and change it to
* 'Cacheable, noncoherent, write-back, write allocate'
*/
.macro kernel_entry_setup
mfc0 t0, CP0_CONFIG
li t1, ~CONF_CM_CMASK
and t0, t1
ori t0, CONF_CM_CACHABLE_NONCOHERENT
mtc0 t0, CP0_CONFIG
nop
.endm
.macro smp_slave_setup
.endm
#endif /* __ASM_MACH_ATH79_KERNEL_ENTRY_H */
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2002, 2004, 2007 by Ralf Baechle <ralf@linux-mips.org>
*/
#ifndef __ASM_MACH_ATH79_WAR_H
#define __ASM_MACH_ATH79_WAR_H
#define R4600_V1_INDEX_ICACHEOP_WAR 0
#define R4600_V1_HIT_CACHEOP_WAR 0
#define R4600_V2_HIT_CACHEOP_WAR 0
#define R5432_CP0_INTERRUPT_WAR 0
#define BCM1250_M3_WAR 0
#define SIBYTE_1956_WAR 0
#define MIPS4K_ICACHE_REFILL_WAR 0
#define MIPS_CACHE_SYNC_WAR 0
#define TX49XX_ICACHE_INDEX_INV_WAR 0
#define RM9000_CDEX_SMP_WAR 0
#define ICACHE_REFILLS_WORKAROUND_WAR 0
#define R10000_LLSC_WAR 0
#define MIPS34K_MISSED_ITLB_WAR 0
#endif /* __ASM_MACH_ATH79_WAR_H */
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