provide an early ioremap cookie of the system configuration register

SVN-Revision: 32489

target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/clock.c

@@ -16,6 +16,8 @@
 
 #include <mach/mcs814x.h>
 
+#include "common.h"
+
 #define KHZ	1000
 #define MHZ	(KHZ * KHZ)
 
@@ -32,7 +34,7 @@ struct clk {
 	unsigned long divider;		/* clock divider */
 	u32 usecount;			/* reference count */
 	struct clk_ops *ops;		/* clock operation */
-	void __iomem *enable_reg;	/* clock enable register */
+	u32 enable_reg;			/* clock enable register */
 	u32 enable_mask;		/* clock enable mask */
 };
 
@@ -52,13 +54,13 @@ static int clk_local_onoff_enable(struct clk *clk, int enable)
 	if (!clk->enable_reg)
 		return 0;
 
-	tmp = __raw_readl(clk->enable_reg);
+	tmp = __raw_readl(mcs814x_sysdbg_base + clk->enable_reg);
 	if (!enable)
 		tmp &= ~clk->enable_mask;
 	else
 		tmp |= clk->enable_mask;
 
-	__raw_writel(tmp, clk->enable_reg);
+	__raw_writel(tmp, mcs814x_sysdbg_base + clk->enable_reg);
 
 	return 0;
 }
@@ -117,19 +119,19 @@ static struct clk clk_wdt = {
 
 static struct clk clk_emac = {
 	.ops		= &default_clk_ops,
-	.enable_reg	= (void __iomem *)(_CONFADDR_SYSDBG + SYSDBG_SYSCTL),
+	.enable_reg	= SYSDBG_SYSCTL,
 	.enable_mask	= SYSCTL_EMAC,
 };
 
 static struct clk clk_ephy = {
 	.ops		= &default_clk_ops,
-	.enable_reg	= (void __iomem *)(_CONFADDR_SYSDBG + SYSDBG_PLL_CTL),
+	.enable_reg	= SYSDBG_PLL_CTL,
-	.enable_mask	= ~(1 << 0),
+	.enable_mask	= ~SYSCTL_EPHY,	/* active low */
 };
 
 static struct clk clk_cipher = {
 	.ops		= &default_clk_ops,
-	.enable_reg	= (void __iomem *)(_CONFADDR_SYSDBG + SYSDBG_SYSCTL),
+	.enable_reg	= SYSDBG_SYSCTL,
 	.enable_mask	= SYSCTL_CIPHER,
 };
 
@@ -252,7 +254,7 @@ void __init mcs814x_clk_init(void)
 	clkdev_add_table(mcs814x_chip_clks, ARRAY_SIZE(mcs814x_chip_clks));
 
 	/* read the bootstrap registers to know the exact clocking scheme */
-	bs1 = __raw_readl(_CONFADDR_SYSDBG + SYSDBG_BS1);
+	bs1 = __raw_readl(mcs814x_sysdbg_base + SYSDBG_BS1);
 	cpu_freq = (bs1 >> CPU_FREQ_SHIFT) & CPU_FREQ_MASK;
 
 	pr_info("CPU frequency: %lu (kHz)\n", cpu_freq_table[cpu_freq]);

target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/common.c

@@ -23,6 +23,8 @@
 #include <asm/pgtable.h>
 #include <asm/mach/map.h>
 
+void __iomem *mcs814x_sysdbg_base;
+
 static struct map_desc mcs814x_io_desc[] __initdata = {
 	{
 		.virtual	= MCS814X_IO_BASE,
@@ -65,34 +67,34 @@ static void mcs814x_eth_hardware_filter_set(u8 value)
 {
 	u32 reg;
 
-	reg = __raw_readl(_CONFADDR_DBGLED);
+	reg = __raw_readl(MCS814X_VIRT_BASE + MCS814X_DBGLED);
 	if (value)
 		reg |= 0x80;
 	else
 		reg &= ~0x80;
-	__raw_writel(reg, _CONFADDR_DBGLED);
+	__raw_writel(reg, MCS814X_VIRT_BASE + MCS814X_DBGLED);
 }
 
 static void mcs814x_eth_led_cfg_set(u8 cfg)
 {
 	u32 reg;
 
-	reg = __raw_readl(_CONFADDR_SYSDBG + SYSDBG_BS2);
+	reg = __raw_readl(mcs814x_sysdbg_base + SYSDBG_BS2);
 	reg &= ~LED_CFG_MASK;
 	reg |= cfg;
-	__raw_writel(reg, _CONFADDR_SYSDBG + SYSDBG_BS2);
+	__raw_writel(reg, mcs814x_sysdbg_base + SYSDBG_BS2);
 }
 
 static void mcs814x_eth_buffer_shifting_set(u8 value)
 {
 	u8 reg;
 
-	reg = __raw_readb(_CONFADDR_SYSDBG + SYSDBG_SYSCTL_MAC);
+	reg = __raw_readb(mcs814x_sysdbg_base + SYSDBG_SYSCTL_MAC);
 	if (value)
 		reg |= BUF_SHIFT_BIT;
 	else
 		reg &= ~BUF_SHIFT_BIT;
-	__raw_writeb(reg, _CONFADDR_SYSDBG + SYSDBG_SYSCTL_MAC);
+	__raw_writeb(reg, mcs814x_sysdbg_base + SYSDBG_SYSCTL_MAC);
 }
 
 static struct of_device_id mcs814x_eth_ids[] __initdata = {
@@ -130,7 +132,7 @@ void __init mcs814x_init_machine(void)
 	u32 bs2, cpu_mode;
 	int gpio;
 
-	bs2 = __raw_readl(_CONFADDR_SYSDBG + SYSDBG_BS2);
+	bs2 = __raw_readl(mcs814x_sysdbg_base + SYSDBG_BS2);
 	cpu_mode = (bs2 >> CPU_MODE_SHIFT) & CPU_MODE_MASK;
 
 	pr_info("CPU mode: %s\n", cpu_modes[cpu_mode].name);
@@ -148,9 +150,14 @@ void __init mcs814x_init_machine(void)
 void __init mcs814x_map_io(void)
 {
 	iotable_init(mcs814x_io_desc, ARRAY_SIZE(mcs814x_io_desc));
+
+	mcs814x_sysdbg_base = ioremap(MCS814X_IO_START + MCS814X_SYSDBG,
+					MCS814X_SYSDBG_SIZE);
+	if (!mcs814x_sysdbg_base)
+		panic("unable to remap sysdbg base");
 }
 
 void mcs814x_restart(char mode, const char *cmd)
 {
-	__raw_writel(~(1 << 31), _CONFADDR_SYSDBG);
+	__raw_writel(~(1 << 31), mcs814x_sysdbg_base);
 }

target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/common.h

@@ -10,5 +10,6 @@ void mcs814x_init_machine(void);
 void mcs814x_handle_irq(struct pt_regs *regs);
 void mcs814x_restart(char mode, const char *cmd);
 extern struct sys_timer mcs814x_timer;
+extern void __iomem *mcs814x_sysdbg_base;
 
 #endif /* __ARCH_MCS814X_COMMON_H */

target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/include/mach/debug-macro.S

@@ -1,10 +1,10 @@
 #include <mach/mcs814x.h>
 
                 .macro  addruart, rp, rv, tmp
-		ldr	\rp, =_PHYS_CONFADDR
+		ldr	\rp, =MCS814X_PHYS_BASE
-		ldr	\rv, =_VIRT_CONFADDR
+		ldr	\rv, =MCS814X_VIRT_BASE
-		orr	\rp, \rp, #_CONFOFFSET_UART
+		orr	\rp, \rp, #MCS814X_UART
-		orr	\rv, \rv, #_CONFOFFSET_UART
+		orr	\rv, \rv, #MCS814X_UART
                 .endm
 
 #define UART_SHIFT	2

target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/include/mach/mcs814x.h

@@ -20,15 +20,13 @@
 #define MCS814X_IRQ_MASK	0x20
 #define MCS814X_IRQ_STS0	0x40
 
-#define _PHYS_CONFADDR		0x40000000
+#define MCS814X_PHYS_BASE	0x40000000
-#define _VIRT_CONFADDR		MCS814X_IO_BASE
+#define MCS814X_VIRT_BASE	MCS814X_IO_BASE
 
-#define _CONFOFFSET_UART    0x000DC000
+#define MCS814X_UART    	0x000DC000
-#define _CONFOFFSET_DBGLED  0x000EC000
+#define MCS814X_DBGLED  	0x000EC000
-#define _CONFOFFSET_SYSDBG  0x000F8000
+#define MCS814X_SYSDBG  	0x000F8000
-
+#define MCS814X_SYSDBG_SIZE	0x50
-#define _CONFADDR_DBGLED  (_VIRT_CONFADDR + _CONFOFFSET_DBGLED)
-#define _CONFADDR_SYSDBG  (_VIRT_CONFADDR + _CONFOFFSET_SYSDBG)
 
 /* System configuration and bootstrap registers */
 #define SYSDBG_BS1		0x00
@@ -46,6 +44,7 @@
 
 #define SYSDBG_SYSCTL		0x08
 #define  SYSCTL_EMAC		(1 << 0)
+#define  SYSCTL_EPHY		(1 << 1) /* active low */
 #define  SYSCTL_CIPHER		(1 << 16)
 
 #define SYSDBG_PLL_CTL		0x3C

target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/include/mach/uncompress.h

@@ -32,7 +32,7 @@ static inline void flush(void)
 static inline void arch_decomp_setup(void)
 {
 	if (soc_is_mcs8140())
-		uart_base = (void __iomem *)(_PHYS_CONFADDR + _CONFOFFSET_UART);
+		uart_base = (void __iomem *)(MCS814X_PHYS_BASE +MCS814X_UART);
 }
 
 #define arch_decomp_wdog()