diff options
Diffstat (limited to 'arch/arm/mach-pnx4008/sleep.S')
| -rw-r--r-- | arch/arm/mach-pnx4008/sleep.S | 195 |
1 files changed, 0 insertions, 195 deletions
diff --git a/arch/arm/mach-pnx4008/sleep.S b/arch/arm/mach-pnx4008/sleep.S deleted file mode 100644 index f4eed49..0000000 --- a/arch/arm/mach-pnx4008/sleep.S +++ /dev/null @@ -1,195 +0,0 @@ -/* - * linux/arch/arm/mach-pnx4008/sleep.S - * - * PNX4008 support for STOP mode and SDRAM self-refresh - * - * Authors: Dmitry Chigirev, Vitaly Wool <source@mvista.com> - * - * 2005 (c) MontaVista Software, Inc. This file is licensed under - * the terms of the GNU General Public License version 2. This program - * is licensed "as is" without any warranty of any kind, whether express - * or implied. - */ - -#include <linux/linkage.h> -#include <asm/assembler.h> -#include <mach/hardware.h> - -#define PWRMAN_VA_BASE IO_ADDRESS(PNX4008_PWRMAN_BASE) -#define PWR_CTRL_REG_OFFS 0x44 - -#define SDRAM_CFG_VA_BASE IO_ADDRESS(PNX4008_SDRAM_CFG_BASE) -#define MPMC_STATUS_REG_OFFS 0x4 - - .text - -ENTRY(pnx4008_cpu_suspend) - @this function should be entered in Direct run mode. - - @ save registers on stack - stmfd sp!, {r0 - r6, lr} - - @ setup Power Manager base address in r4 - @ and put it's value in r5 - mov r4, #(PWRMAN_VA_BASE & 0xff000000) - orr r4, r4, #(PWRMAN_VA_BASE & 0x00ff0000) - orr r4, r4, #(PWRMAN_VA_BASE & 0x0000ff00) - orr r4, r4, #(PWRMAN_VA_BASE & 0x000000ff) - ldr r5, [r4, #PWR_CTRL_REG_OFFS] - - @ setup SDRAM controller base address in r2 - @ and put it's value in r3 - mov r2, #(SDRAM_CFG_VA_BASE & 0xff000000) - orr r2, r2, #(SDRAM_CFG_VA_BASE & 0x00ff0000) - orr r2, r2, #(SDRAM_CFG_VA_BASE & 0x0000ff00) - orr r2, r2, #(SDRAM_CFG_VA_BASE & 0x000000ff) - ldr r3, [r2, #MPMC_STATUS_REG_OFFS] @extra read - HW bug workaround - - @ clear SDRAM self-refresh bit latch - and r5, r5, #(~(1 << 8)) - @ clear SDRAM self-refresh bit - and r5, r5, #(~(1 << 9)) - str r5, [r4, #PWR_CTRL_REG_OFFS] - - @ do save current bit settings in r1 - mov r1, r5 - - @ set SDRAM self-refresh bit - orr r5, r5, #(1 << 9) - str r5, [r4, #PWR_CTRL_REG_OFFS] - - @ set SDRAM self-refresh bit latch - orr r5, r5, #(1 << 8) - str r5, [r4, #PWR_CTRL_REG_OFFS] - - @ clear SDRAM self-refresh bit latch - and r5, r5, #(~(1 << 8)) - str r5, [r4, #PWR_CTRL_REG_OFFS] - - @ clear SDRAM self-refresh bit - and r5, r5, #(~(1 << 9)) - str r5, [r4, #PWR_CTRL_REG_OFFS] - - @ wait for SDRAM to get into self-refresh mode -2: ldr r3, [r2, #MPMC_STATUS_REG_OFFS] - tst r3, #(1 << 2) - beq 2b - - @ to prepare SDRAM to get out of self-refresh mode after wakeup - orr r5, r5, #(1 << 7) - str r5, [r4, #PWR_CTRL_REG_OFFS] - - @ do enter stop mode - orr r5, r5, #(1 << 0) - str r5, [r4, #PWR_CTRL_REG_OFFS] - nop - nop - nop - nop - nop - nop - nop - nop - nop - - @ sleeping now... - - @ coming out of STOP mode into Direct Run mode - @ clear STOP mode and SDRAM self-refresh bits - str r1, [r4, #PWR_CTRL_REG_OFFS] - - @ wait for SDRAM to get out self-refresh mode -3: ldr r3, [r2, #MPMC_STATUS_REG_OFFS] - tst r3, #5 - bne 3b - - @ restore regs and return - ldmfd sp!, {r0 - r6, pc} - -ENTRY(pnx4008_cpu_suspend_sz) - .word . - pnx4008_cpu_suspend - -ENTRY(pnx4008_cpu_standby) - @ save registers on stack - stmfd sp!, {r0 - r6, lr} - - @ setup Power Manager base address in r4 - @ and put it's value in r5 - mov r4, #(PWRMAN_VA_BASE & 0xff000000) - orr r4, r4, #(PWRMAN_VA_BASE & 0x00ff0000) - orr r4, r4, #(PWRMAN_VA_BASE & 0x0000ff00) - orr r4, r4, #(PWRMAN_VA_BASE & 0x000000ff) - ldr r5, [r4, #PWR_CTRL_REG_OFFS] - - @ setup SDRAM controller base address in r2 - @ and put it's value in r3 - mov r2, #(SDRAM_CFG_VA_BASE & 0xff000000) - orr r2, r2, #(SDRAM_CFG_VA_BASE & 0x00ff0000) - orr r2, r2, #(SDRAM_CFG_VA_BASE & 0x0000ff00) - orr r2, r2, #(SDRAM_CFG_VA_BASE & 0x000000ff) - ldr r3, [r2, #MPMC_STATUS_REG_OFFS] @extra read - HW bug workaround - - @ clear SDRAM self-refresh bit latch - and r5, r5, #(~(1 << 8)) - @ clear SDRAM self-refresh bit - and r5, r5, #(~(1 << 9)) - str r5, [r4, #PWR_CTRL_REG_OFFS] - - @ do save current bit settings in r1 - mov r1, r5 - - @ set SDRAM self-refresh bit - orr r5, r5, #(1 << 9) - str r5, [r4, #PWR_CTRL_REG_OFFS] - - @ set SDRAM self-refresh bit latch - orr r5, r5, #(1 << 8) - str r5, [r4, #PWR_CTRL_REG_OFFS] - - @ clear SDRAM self-refresh bit latch - and r5, r5, #(~(1 << 8)) - str r5, [r4, #PWR_CTRL_REG_OFFS] - - @ clear SDRAM self-refresh bit - and r5, r5, #(~(1 << 9)) - str r5, [r4, #PWR_CTRL_REG_OFFS] - - @ wait for SDRAM to get into self-refresh mode -2: ldr r3, [r2, #MPMC_STATUS_REG_OFFS] - tst r3, #(1 << 2) - beq 2b - - @ set 'get out of self-refresh mode after wakeup' bit - orr r5, r5, #(1 << 7) - str r5, [r4, #PWR_CTRL_REG_OFFS] - - mcr p15, 0, r0, c7, c0, 4 @ kinda sleeping now... - - @ set SDRAM self-refresh bit latch - orr r5, r5, #(1 << 8) - str r5, [r4, #PWR_CTRL_REG_OFFS] - - @ clear SDRAM self-refresh bit latch - and r5, r5, #(~(1 << 8)) - str r5, [r4, #PWR_CTRL_REG_OFFS] - - @ wait for SDRAM to get out self-refresh mode -3: ldr r3, [r2, #MPMC_STATUS_REG_OFFS] - tst r3, #5 - bne 3b - - @ restore regs and return - ldmfd sp!, {r0 - r6, pc} - -ENTRY(pnx4008_cpu_standby_sz) - .word . - pnx4008_cpu_standby - -ENTRY(pnx4008_cache_clean_invalidate) - stmfd sp!, {r0 - r6, lr} -#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH - mcr p15, 0, ip, c7, c6, 0 @ invalidate D cache -#else -1: mrc p15, 0, r15, c7, c14, 3 @ test,clean,invalidate - bne 1b -#endif - ldmfd sp!, {r0 - r6, pc} |