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-rw-r--r--arch/arm/mach-pxa/generic.c10
-rw-r--r--arch/arm/mach-pxa/generic.h8
-rw-r--r--arch/arm/mach-pxa/pxa25x.c4
-rw-r--r--arch/arm/mach-pxa/pxa27x.c4
-rw-r--r--arch/arm/mach-pxa/pxa2xx.c9
-rw-r--r--arch/arm/mach-pxa/pxa3xx.c10
-rw-r--r--arch/arm/mach-pxa/reset.c7
-rw-r--r--arch/arm/mach-sa1100/generic.c3
-rw-r--r--include/asm-arm/arch-pxa/reset.h9
-rw-r--r--include/asm-arm/arch-sa1100/reset.h18
10 files changed, 79 insertions, 3 deletions
diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c
index ca053226fba..36638926c5c 100644
--- a/arch/arm/mach-pxa/generic.c
+++ b/arch/arm/mach-pxa/generic.c
@@ -26,9 +26,19 @@
#include <asm/mach/map.h>
#include <asm/arch/pxa-regs.h>
+#include <asm/arch/reset.h>
#include "generic.h"
+void clear_reset_status(unsigned int mask)
+{
+ if (cpu_is_pxa2xx())
+ pxa2xx_clear_reset_status(mask);
+
+ if (cpu_is_pxa3xx())
+ pxa3xx_clear_reset_status(mask);
+}
+
/*
* Get the clock frequency as reflected by CCCR and the turbo flag.
* We assume these values have been applied via a fcs.
diff --git a/arch/arm/mach-pxa/generic.h b/arch/arm/mach-pxa/generic.h
index 5bb7ae75783..041c048320e 100644
--- a/arch/arm/mach-pxa/generic.h
+++ b/arch/arm/mach-pxa/generic.h
@@ -47,12 +47,20 @@ extern unsigned pxa27x_get_memclk_frequency_10khz(void);
#define pxa27x_get_memclk_frequency_10khz() (0)
#endif
+#if defined(CONFIG_PXA25x) || defined(CONFIG_PXA27x)
+extern void pxa2xx_clear_reset_status(unsigned int);
+#else
+static inline void pxa2xx_clear_reset_status(unsigned int mask) {}
+#endif
+
#ifdef CONFIG_PXA3xx
extern unsigned pxa3xx_get_clk_frequency_khz(int);
extern unsigned pxa3xx_get_memclk_frequency_10khz(void);
+extern void pxa3xx_clear_reset_status(unsigned int);
#else
#define pxa3xx_get_clk_frequency_khz(x) (0)
#define pxa3xx_get_memclk_frequency_10khz() (0)
+static inline void pxa3xx_clear_reset_status(unsigned int mask) {}
#endif
extern struct sysdev_class pxa_irq_sysclass;
diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c
index c5b845b935b..49a7a296ff3 100644
--- a/arch/arm/mach-pxa/pxa25x.c
+++ b/arch/arm/mach-pxa/pxa25x.c
@@ -28,6 +28,7 @@
#include <asm/arch/pxa-regs.h>
#include <asm/arch/pxa2xx-regs.h>
#include <asm/arch/mfp-pxa25x.h>
+#include <asm/arch/reset.h>
#include <asm/arch/pm.h>
#include <asm/arch/dma.h>
@@ -348,6 +349,9 @@ static int __init pxa25x_init(void)
clks_register(&pxa25x_hwuart_clk, 1);
if (cpu_is_pxa21x() || cpu_is_pxa25x()) {
+
+ reset_status = RCSR;
+
clks_register(pxa25x_clks, ARRAY_SIZE(pxa25x_clks));
if ((ret = pxa_init_dma(16)))
diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c
index d5d14ea33f2..a8c12347a5a 100644
--- a/arch/arm/mach-pxa/pxa27x.c
+++ b/arch/arm/mach-pxa/pxa27x.c
@@ -24,6 +24,7 @@
#include <asm/arch/pxa-regs.h>
#include <asm/arch/pxa2xx-regs.h>
#include <asm/arch/mfp-pxa27x.h>
+#include <asm/arch/reset.h>
#include <asm/arch/ohci.h>
#include <asm/arch/pm.h>
#include <asm/arch/dma.h>
@@ -384,6 +385,9 @@ static int __init pxa27x_init(void)
int i, ret = 0;
if (cpu_is_pxa27x()) {
+
+ reset_status = RCSR;
+
clks_register(pxa27x_clks, ARRAY_SIZE(pxa27x_clks));
if ((ret = pxa_init_dma(32)))
diff --git a/arch/arm/mach-pxa/pxa2xx.c b/arch/arm/mach-pxa/pxa2xx.c
index d4f6415e841..d93d3e6a6e2 100644
--- a/arch/arm/mach-pxa/pxa2xx.c
+++ b/arch/arm/mach-pxa/pxa2xx.c
@@ -14,10 +14,19 @@
#include <linux/kernel.h>
#include <linux/device.h>
+#include <asm/hardware.h>
+#include <asm/arch/pxa2xx-regs.h>
#include <asm/arch/mfp-pxa2xx.h>
#include <asm/arch/mfp-pxa25x.h>
+#include <asm/arch/reset.h>
#include <asm/arch/irda.h>
+void pxa2xx_clear_reset_status(unsigned int mask)
+{
+ /* RESET_STATUS_* has a 1:1 mapping with RCSR */
+ RCSR = mask;
+}
+
static unsigned long pxa2xx_mfp_fir[] = {
GPIO46_FICP_RXD,
GPIO47_FICP_TXD,
diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c
index f491025a0c8..3d36c790f5c 100644
--- a/arch/arm/mach-pxa/pxa3xx.c
+++ b/arch/arm/mach-pxa/pxa3xx.c
@@ -24,6 +24,7 @@
#include <asm/hardware.h>
#include <asm/arch/pxa3xx-regs.h>
+#include <asm/arch/reset.h>
#include <asm/arch/ohci.h>
#include <asm/arch/pm.h>
#include <asm/arch/dma.h>
@@ -109,6 +110,12 @@ unsigned int pxa3xx_get_memclk_frequency_10khz(void)
return (clk / 10000);
}
+void pxa3xx_clear_reset_status(unsigned int mask)
+{
+ /* RESET_STATUS_* has a 1:1 mapping with ARSR */
+ ARSR = mask;
+}
+
/*
* Return the current AC97 clock frequency.
*/
@@ -532,6 +539,9 @@ static int __init pxa3xx_init(void)
int i, ret = 0;
if (cpu_is_pxa3xx()) {
+
+ reset_status = ARSR;
+
/*
* clear RDH bit every time after reset
*
diff --git a/arch/arm/mach-pxa/reset.c b/arch/arm/mach-pxa/reset.c
index d610a1244ab..56f60d923a9 100644
--- a/arch/arm/mach-pxa/reset.c
+++ b/arch/arm/mach-pxa/reset.c
@@ -11,9 +11,11 @@
#include <asm/proc-fns.h>
#include <asm/arch/pxa-regs.h>
-#include <asm/arch/pxa2xx-regs.h>
#include <asm/arch/reset.h>
+unsigned int reset_status;
+EXPORT_SYMBOL(reset_status);
+
static void do_hw_reset(void);
static int reset_gpio = -1;
@@ -78,8 +80,7 @@ static void do_hw_reset(void)
void arch_reset(char mode)
{
- if (cpu_is_pxa2xx())
- RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
+ clear_reset_status(RESET_STATUS_ALL);
switch (mode) {
case 's':
diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c
index 0c2fa1c4fb4..3b6fc090c8e 100644
--- a/arch/arm/mach-sa1100/generic.c
+++ b/arch/arm/mach-sa1100/generic.c
@@ -31,6 +31,9 @@
#include "generic.h"
+unsigned int reset_status;
+EXPORT_SYMBOL(reset_status);
+
#define NR_FREQS 16
/*
diff --git a/include/asm-arm/arch-pxa/reset.h b/include/asm-arm/arch-pxa/reset.h
index 6ca72c5cf7d..9489a48871a 100644
--- a/include/asm-arm/arch-pxa/reset.h
+++ b/include/asm-arm/arch-pxa/reset.h
@@ -1,6 +1,15 @@
#ifndef __ASM_ARCH_RESET_H
#define __ASM_ARCH_RESET_H
+#define RESET_STATUS_HARDWARE (1 << 0) /* Hardware Reset */
+#define RESET_STATUS_WATCHDOG (1 << 1) /* Watchdog Reset */
+#define RESET_STATUS_LOWPOWER (1 << 2) /* Low Power/Sleep Exit */
+#define RESET_STATUS_GPIO (1 << 3) /* GPIO Reset */
+#define RESET_STATUS_ALL (0xf)
+
+extern unsigned int reset_status;
+extern void clear_reset_status(unsigned int mask);
+
/*
* register GPIO as reset generator
*/
diff --git a/include/asm-arm/arch-sa1100/reset.h b/include/asm-arm/arch-sa1100/reset.h
new file mode 100644
index 00000000000..f61957e6842
--- /dev/null
+++ b/include/asm-arm/arch-sa1100/reset.h
@@ -0,0 +1,18 @@
+#ifndef __ASM_ARCH_RESET_H
+#define __ASM_ARCH_RESET_H
+
+#include "hardware.h"
+
+#define RESET_STATUS_HARDWARE (1 << 0) /* Hardware Reset */
+#define RESET_STATUS_WATCHDOG (1 << 1) /* Watchdog Reset */
+#define RESET_STATUS_LOWPOWER (1 << 2) /* Exit from Low Power/Sleep */
+#define RESET_STATUS_GPIO (1 << 3) /* GPIO Reset */
+#define RESET_STATUS_ALL (0xf)
+
+extern unsigned int reset_status;
+static inline void clear_reset_status(unsigned int mask)
+{
+ RCSR = mask;
+}
+
+#endif /* __ASM_ARCH_RESET_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-22 21:02:28 +0000