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ARM: 5873/1: ARM: Fix the reset logic for ARM RealView boards 

Extend the patch from Philby John to the other "RealView" boards.
Rename the constants and offsets to reflect their actual functions.

Cc: Philby John <pjohn@in.mvista.com>
Signed-off-by: Colin Tuckley <colin.tuckley@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
hifive-unleashed-5.1
Colin Tuckley 2010-01-11 11:09:15 +01:00 committed by Russell King
parent 62a8c5bcb5
commit 4c9f8be7da
7 changed files with 57 additions and 15 deletions
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4
arch/arm/mach-realview/include/mach/board-pb1176.h
View File

@ -74,8 +74,8 @@
#define REALVIEW_PB1176_L220_BASE 0x10110000 /* L220 registers */
/*
* Control register SYS_RESETCTL is set to 1 to force a soft reset
* Control register SYS_RESETCTL Bit 8 is set to 1 to force a soft reset
*/
#define REALVIEW_PB1176_SYS_LOCKVAL_RSTCTL 0x0100
#define REALVIEW_PB1176_SYS_SOFT_RESET 0x0100
#endif /* __ASM_ARCH_BOARD_PB1176_H */

2
arch/arm/mach-realview/include/mach/platform.h
View File

@ -140,7 +140,7 @@
* SYS_CLD, SYS_BOOTCS
*/
#define REALVIEW_SYS_LOCK_LOCKED (1 << 16)
#define REALVIEW_SYS_LOCKVAL_MASK 0xA05F /* Enable write access */
#define REALVIEW_SYS_LOCK_VAL 0xA05F /* Enable write access */
/*
* REALVIEW_SYS_FLASH

15
arch/arm/mach-realview/realview_eb.c
View File

@ -381,6 +381,20 @@ static struct sys_timer realview_eb_timer = {
.init = realview_eb_timer_init,
};
static void realview_eb_reset(char mode)
{
void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
/*
* To reset, we hit the on-board reset register
* in the system FPGA
*/
__raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
if (core_tile_eb11mp())
__raw_writel(0x0008, reset_ctrl);
}
static void __init realview_eb_init(void)
{
int i;
@ -408,6 +422,7 @@ static void __init realview_eb_init(void)
#ifdef CONFIG_LEDS
leds_event = realview_leds_event;
#endif
realview_reset = realview_eb_reset;
}
MACHINE_START(REALVIEW_EB, "ARM-RealView EB")

10
arch/arm/mach-realview/realview_pb1176.c
View File

@ -292,12 +292,10 @@ static struct sys_timer realview_pb1176_timer = {
static void realview_pb1176_reset(char mode)
{
void __iomem *hdr_ctrl = __io_address(REALVIEW_SYS_BASE) +
REALVIEW_SYS_RESETCTL_OFFSET;
void __iomem *rst_hdr_ctrl = __io_address(REALVIEW_SYS_BASE) +
REALVIEW_SYS_LOCK_OFFSET;
__raw_writel(REALVIEW_SYS_LOCKVAL_MASK, rst_hdr_ctrl);
__raw_writel(REALVIEW_PB1176_SYS_LOCKVAL_RSTCTL, hdr_ctrl);
void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
__raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
__raw_writel(REALVIEW_PB1176_SYS_SOFT_RESET, reset_ctrl);
}
static void realview_pb1176_fixup(struct machine_desc *mdesc,

11
arch/arm/mach-realview/realview_pb11mp.c
View File

@ -301,17 +301,16 @@ static struct sys_timer realview_pb11mp_timer = {
static void realview_pb11mp_reset(char mode)
{
void __iomem *hdr_ctrl = __io_address(REALVIEW_SYS_BASE) +
REALVIEW_SYS_RESETCTL_OFFSET;
unsigned int val;
void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
/*
* To reset, we hit the on-board reset register
* in the system FPGA
*/
val = __raw_readl(hdr_ctrl);
val |= REALVIEW_PB11MP_SYS_CTRL_RESET_CONFIGCLR;
__raw_writel(val, hdr_ctrl);
__raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
__raw_writel(0x0000, reset_ctrl);
__raw_writel(0x0004, reset_ctrl);
}
static void __init realview_pb11mp_init(void)

15
arch/arm/mach-realview/realview_pba8.c
View File

@ -272,6 +272,20 @@ static struct sys_timer realview_pba8_timer = {
.init = realview_pba8_timer_init,
};
static void realview_pba8_reset(char mode)
{
void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
/*
* To reset, we hit the on-board reset register
* in the system FPGA
*/
__raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
__raw_writel(0x0000, reset_ctrl);
__raw_writel(0x0004, reset_ctrl);
}
static void __init realview_pba8_init(void)
{
int i;
@ -291,6 +305,7 @@ static void __init realview_pba8_init(void)
#ifdef CONFIG_LEDS
leds_event = realview_leds_event;
#endif
realview_reset = realview_pba8_reset;
}
MACHINE_START(REALVIEW_PBA8, "ARM-RealView PB-A8")

15
arch/arm/mach-realview/realview_pbx.c
View File

@ -324,6 +324,20 @@ static void realview_pbx_fixup(struct machine_desc *mdesc, struct tag *tags,
#endif
}
static void realview_pbx_reset(char mode)
{
void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
/*
* To reset, we hit the on-board reset register
* in the system FPGA
*/
__raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
__raw_writel(0x0000, reset_ctrl);
__raw_writel(0x0004, reset_ctrl);
}
static void __init realview_pbx_init(void)
{
int i;
@ -358,6 +372,7 @@ static void __init realview_pbx_init(void)
#ifdef CONFIG_LEDS
leds_event = realview_leds_event;
#endif
realview_reset = realview_pbx_reset;
}
MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")