[PATCH v3 4/5] powerpc/pm: support deep sleep feature on T104x
Chenhui Zhao
chenhui.zhao at nxp.com
Tue Aug 2 21:59:31 AEST 2016
T104x has deep sleep feature, which can switch off most parts of
the SoC when it is in deep sleep mode. This way, it becomes more
energy-efficient.
The DDR controller will also be powered off in deep sleep. Therefore,
the last stage (the latter part of fsl_dp_enter_low) will run without DDR
access. This piece of code and related TLBs are prefetched in advance.
Due to the different initialization code between 32-bit and 64-bit, they
have separate resume entry and precedure.
The feature supports 32-bit and 64-bit kernel mode.
Signed-off-by: Chenhui Zhao <chenhui.zhao at nxp.com>
---
arch/powerpc/include/asm/fsl_pm.h | 24 ++
arch/powerpc/kernel/asm-offsets.c | 12 +
arch/powerpc/kernel/fsl_booke_entry_mapping.S | 10 +
arch/powerpc/kernel/head_64.S | 2 +-
arch/powerpc/platforms/85xx/Makefile | 1 +
arch/powerpc/platforms/85xx/deepsleep.c | 278 ++++++++++++++
arch/powerpc/platforms/85xx/qoriq_pm.c | 25 ++
arch/powerpc/platforms/85xx/t104x_deepsleep.S | 531 ++++++++++++++++++++++++++
arch/powerpc/sysdev/fsl_rcpm.c | 8 +-
9 files changed, 889 insertions(+), 2 deletions(-)
create mode 100644 arch/powerpc/platforms/85xx/deepsleep.c
create mode 100644 arch/powerpc/platforms/85xx/t104x_deepsleep.S
diff --git a/arch/powerpc/include/asm/fsl_pm.h b/arch/powerpc/include/asm/fsl_pm.h
index e05049b..48c2631 100644
--- a/arch/powerpc/include/asm/fsl_pm.h
+++ b/arch/powerpc/include/asm/fsl_pm.h
@@ -20,6 +20,7 @@
#define PLAT_PM_SLEEP 20
#define PLAT_PM_LPM20 30
+#define PLAT_PM_LPM35 40
#define FSL_PM_SLEEP (1 << 0)
#define FSL_PM_DEEP_SLEEP (1 << 1)
@@ -48,4 +49,27 @@ extern const struct fsl_pm_ops *qoriq_pm_ops;
int __init fsl_rcpm_init(void);
+#ifdef CONFIG_FSL_QORIQ_PM
+int fsl_enter_deepsleep(void);
+int fsl_deepsleep_init(void);
+#else
+static inline int fsl_enter_deepsleep(void) { return -1; }
+static inline int fsl_deepsleep_init(void) { return -1; }
+#endif
+
+extern void fsl_dp_enter_low(void *priv);
+extern void fsl_booke_deep_sleep_resume(void);
+
+struct fsl_iomap {
+ void *ccsr_scfg_base;
+ void *ccsr_rcpm_base;
+ void *ccsr_ddr_base;
+ void *ccsr_gpio1_base;
+ void *ccsr_cpc_base;
+ void *dcsr_epu_base;
+ void *dcsr_npc_base;
+ void *dcsr_rcpm_base;
+ void *cpld_base;
+ void *fpga_base;
+};
#endif /* __PPC_FSL_PM_H */
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index 9ea0955..cc488f9 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -68,6 +68,10 @@
#include "../mm/mmu_decl.h"
#endif
+#ifdef CONFIG_FSL_QORIQ_PM
+#include <asm/fsl_pm.h>
+#endif
+
int main(void)
{
DEFINE(THREAD, offsetof(struct task_struct, thread));
@@ -783,5 +787,13 @@ int main(void)
DEFINE(PPC_DBELL_SERVER, PPC_DBELL_SERVER);
+#ifdef CONFIG_FSL_QORIQ_PM
+ DEFINE(CCSR_CPC_BASE, offsetof(struct fsl_iomap, ccsr_cpc_base));
+ DEFINE(CCSR_GPIO1_BASE, offsetof(struct fsl_iomap, ccsr_gpio1_base));
+ DEFINE(CCSR_RCPM_BASE, offsetof(struct fsl_iomap, ccsr_rcpm_base));
+ DEFINE(CCSR_DDR_BASE, offsetof(struct fsl_iomap, ccsr_ddr_base));
+ DEFINE(CCSR_SCFG_BASE, offsetof(struct fsl_iomap, ccsr_scfg_base));
+ DEFINE(DCSR_EPU_BASE, offsetof(struct fsl_iomap, dcsr_epu_base));
+#endif
return 0;
}
diff --git a/arch/powerpc/kernel/fsl_booke_entry_mapping.S b/arch/powerpc/kernel/fsl_booke_entry_mapping.S
index 83dd0f6..659b059 100644
--- a/arch/powerpc/kernel/fsl_booke_entry_mapping.S
+++ b/arch/powerpc/kernel/fsl_booke_entry_mapping.S
@@ -173,6 +173,10 @@ skpinv: addi r6,r6,1 /* Increment */
lis r6,MAS2_VAL(PAGE_OFFSET, BOOK3E_PAGESZ_64M, M_IF_NEEDED)@h
ori r6,r6,MAS2_VAL(PAGE_OFFSET, BOOK3E_PAGESZ_64M, M_IF_NEEDED)@l
mtspr SPRN_MAS2,r6
+#ifdef ENTRY_DEEPSLEEP_SETUP
+ LOAD_REG_IMMEDIATE(r8, MEMORY_START)
+ ori r8,r8,(MAS3_SX|MAS3_SW|MAS3_SR)
+#endif
mtspr SPRN_MAS3,r8
tlbwe
@@ -215,12 +219,18 @@ next_tlb_setup:
#error You need to specify the mapping or not use this at all.
#endif
+#ifdef ENTRY_DEEPSLEEP_SETUP
+ LOAD_REG_ADDR(r6, 2f)
+ mfmsr r7
+ rlwinm r7,r7,0,~(MSR_IS|MSR_DS)
+#else
lis r7,MSR_KERNEL at h
ori r7,r7,MSR_KERNEL at l
bl 1f /* Find our address */
1: mflr r9
rlwimi r6,r9,0,20,31
addi r6,r6,(2f - 1b)
+#endif
mtspr SPRN_SRR0,r6
mtspr SPRN_SRR1,r7
rfi /* start execution out of TLB1[0] entry */
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 2d14774..21fa124 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -829,7 +829,7 @@ _GLOBAL(start_secondary_resume)
/*
* This subroutine clobbers r11 and r12
*/
-enable_64b_mode:
+_GLOBAL(enable_64b_mode)
mfmsr r11 /* grab the current MSR */
#ifdef CONFIG_PPC_BOOK3E
oris r11,r11,0x8000 /* CM bit set, we'll set ICM later */
diff --git a/arch/powerpc/platforms/85xx/Makefile b/arch/powerpc/platforms/85xx/Makefile
index 87fb847..a73d563 100644
--- a/arch/powerpc/platforms/85xx/Makefile
+++ b/arch/powerpc/platforms/85xx/Makefile
@@ -4,6 +4,7 @@
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_FSL_PMC) += mpc85xx_pm_ops.o
obj-$(CONFIG_FSL_QORIQ_PM) += qoriq_pm.o sleep_fsm.o
+obj-$(CONFIG_FSL_QORIQ_PM) += deepsleep.o t104x_deepsleep.o
obj-y += common.o
diff --git a/arch/powerpc/platforms/85xx/deepsleep.c b/arch/powerpc/platforms/85xx/deepsleep.c
new file mode 100644
index 0000000..9521d99
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/deepsleep.c
@@ -0,0 +1,278 @@
+/*
+ * Support deep sleep feature for T104x
+ *
+ * Copyright 2016 Freescale Semiconductor Inc.
+ *
+ * Author: Chenhui Zhao <chenhui.zhao at nxp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#define pr_fmt(fmt) "%s: " fmt, __func__
+
+#include <linux/kernel.h>
+#include <linux/of_platform.h>
+#include <linux/of_address.h>
+#include <linux/slab.h>
+#include <sysdev/fsl_soc.h>
+#include <asm/machdep.h>
+#include <asm/fsl_pm.h>
+
+#include "sleep_fsm.h"
+
+#define CPC_CPCHDBCR0 0x0f00
+#define CPC_CPCHDBCR0_SPEC_DIS 0x08000000
+
+#define CCSR_SCFG_DPSLPCR 0x000
+#define CCSR_SCFG_DPSLPCR_WDRR_EN 0x1
+#define CCSR_SCFG_SPARECR2 0x504
+#define CCSR_SCFG_SPARECR3 0x508
+
+#define CCSR_GPIO1_GPDIR 0x000
+#define CCSR_GPIO1_GPODR 0x004
+#define CCSR_GPIO1_GPDAT 0x008
+
+#define QIXIS_PWR_CTL2 0x21
+#define QIXIS_PWR_CTL2_PCTL 0x2
+
+#define QORIQ_CPLD_MISCCSR 0x17
+#define QORIQ_CPLD_MISCCSR_SLEEPEN 0x40
+
+/* 128 bytes buffer for restoring data broke by DDR training initialization */
+#define DDR_BUF_SIZE 128
+static u8 ddr_buff[DDR_BUF_SIZE] __aligned(64);
+static int fsl_gpio_mcke;
+
+static void fsl_dp_iounmap(void);
+
+static struct fsl_iomap fsl_dp_priv;
+
+static const struct of_device_id fsl_dp_cpld_ids[] __initconst = {
+ { .compatible = "fsl,t1024-cpld", },
+ { .compatible = "fsl,t1040rdb-cpld", },
+ { .compatible = "fsl,t1042rdb-cpld", },
+ { .compatible = "fsl,t1042rdb_pi-cpld", },
+ { .compatible = "fsl,t1040d4rdb-cpld", },
+ {}
+};
+
+static const struct of_device_id fsl_dp_fpga_ids[] __initconst = {
+ { .compatible = "fsl,fpga-qixis", },
+ { .compatible = "fsl,tetra-fpga", },
+ {}
+};
+
+static void fsl_dp_set_resume_pointer(void)
+{
+ u32 resume_addr;
+
+ /* the bootloader will finally jump to this address to return kernel */
+#ifdef CONFIG_PPC32
+ resume_addr = (u32)(__pa(fsl_booke_deep_sleep_resume));
+#else
+ resume_addr = (u32)(__pa(*(u64 *)fsl_booke_deep_sleep_resume)
+ & 0xffffffff);
+#endif
+
+ /* use the register SPARECR2 to save the resume address */
+ out_be32(fsl_dp_priv.ccsr_scfg_base + CCSR_SCFG_SPARECR2,
+ resume_addr);
+}
+
+static void fsl_dp_pins_setup(void)
+{
+ u32 mask = BIT(31 - fsl_gpio_mcke);
+
+ /* set GPIO1_29 as an output pin (not open-drain), and output 0 */
+ clrbits32(fsl_dp_priv.ccsr_gpio1_base + CCSR_GPIO1_GPDAT, mask);
+ clrbits32(fsl_dp_priv.ccsr_gpio1_base + CCSR_GPIO1_GPODR, mask);
+ setbits32(fsl_dp_priv.ccsr_gpio1_base + CCSR_GPIO1_GPDIR, mask);
+
+ /* wait for the stabilization of GPIO1_29 */
+ udelay(10);
+
+ /* enable the functionality of pins relevant to deep sleep */
+ if (fsl_dp_priv.cpld_base) {
+ setbits8(fsl_dp_priv.cpld_base + QORIQ_CPLD_MISCCSR,
+ QORIQ_CPLD_MISCCSR_SLEEPEN);
+ } else if (fsl_dp_priv.fpga_base) {
+ setbits8(fsl_dp_priv.fpga_base + QIXIS_PWR_CTL2,
+ QIXIS_PWR_CTL2_PCTL);
+ }
+}
+
+static void fsl_dp_ddr_save(void *scfg_base)
+{
+ u32 ddr_buff_addr;
+
+ /*
+ * DDR training initialization will break 128 bytes at the beginning
+ * of DDR, therefore, save them so that the bootloader will restore
+ * them. Assume that DDR is mapped to the address space started with
+ * CONFIG_PAGE_OFFSET.
+ */
+ memcpy(ddr_buff, (void *)CONFIG_PAGE_OFFSET, DDR_BUF_SIZE);
+
+ /* assume ddr_buff is in the physical address space of 4GB */
+ ddr_buff_addr = (u32)(__pa(ddr_buff) & 0xffffffff);
+
+ /*
+ * the bootloader will restore the first 128 bytes of DDR from
+ * the location indicated by the register SPARECR3
+ */
+ out_be32(scfg_base + CCSR_SCFG_SPARECR3, ddr_buff_addr);
+}
+
+int fsl_enter_deepsleep(void)
+{
+ fsl_dp_ddr_save(fsl_dp_priv.ccsr_scfg_base);
+
+ fsl_dp_set_resume_pointer();
+
+ /* enable Warm Device Reset request. */
+ setbits32(fsl_dp_priv.ccsr_scfg_base + CCSR_SCFG_DPSLPCR,
+ CCSR_SCFG_DPSLPCR_WDRR_EN);
+
+ /*
+ * Disable CPC speculation to avoid deep sleep hang, especially
+ * in secure boot mode. This bit will be cleared automatically
+ * when resuming from deep sleep.
+ */
+ setbits32(fsl_dp_priv.ccsr_cpc_base + CPC_CPCHDBCR0,
+ CPC_CPCHDBCR0_SPEC_DIS);
+
+ fsl_epu_setup_default(fsl_dp_priv.dcsr_epu_base);
+ fsl_npc_setup_default(fsl_dp_priv.dcsr_npc_base);
+ fsl_dcsr_rcpm_setup(fsl_dp_priv.dcsr_rcpm_base);
+
+ fsl_dp_pins_setup();
+
+ fsl_dp_enter_low(&fsl_dp_priv);
+
+ /* disable Warm Device Reset request */
+ clrbits32(fsl_dp_priv.ccsr_scfg_base + CCSR_SCFG_DPSLPCR,
+ CCSR_SCFG_DPSLPCR_WDRR_EN);
+
+ fsl_epu_clean_default(fsl_dp_priv.dcsr_epu_base);
+
+ return 0;
+}
+
+static void __init *fsl_of_iomap(char *comp)
+{
+ struct device_node *np;
+ void *addr;
+
+ np = of_find_compatible_node(NULL, NULL, comp);
+ if (np) {
+ addr = of_iomap(np, 0);
+ of_node_put(np);
+ return addr;
+ }
+
+ return NULL;
+}
+
+static struct device_node __init *fsl_get_gpio_node(void)
+{
+ struct device_node *np;
+ u32 val[3];
+ int ret;
+
+ np = of_find_compatible_node(NULL, NULL, "fsl,qoriq-rcpm-2.1");
+ ret = of_property_read_u32_array(np, "mcke-gpios", val, 3);
+ if (ret)
+ return NULL;
+
+ fsl_gpio_mcke = val[1];
+ np = of_find_node_by_phandle((phandle)val[0]);
+ if (!np)
+ return NULL;
+
+ return np;
+}
+
+static int __init fsl_dp_iomap(void)
+{
+ struct device_node *np;
+
+ np = of_find_matching_node(NULL, fsl_dp_cpld_ids);
+ if (np) {
+ fsl_dp_priv.cpld_base = of_iomap(np, 0);
+ of_node_put(np);
+ } else {
+ np = of_find_matching_node(NULL, fsl_dp_fpga_ids);
+ if (np) {
+ fsl_dp_priv.fpga_base = of_iomap(np, 0);
+ of_node_put(np);
+ } else
+ goto err;
+ }
+
+ fsl_dp_priv.ccsr_scfg_base = fsl_of_iomap("fsl,t1040-scfg");
+ if (!fsl_dp_priv.ccsr_scfg_base) {
+ fsl_dp_priv.ccsr_scfg_base = fsl_of_iomap("fsl,t1023-scfg");
+ if (!fsl_dp_priv.ccsr_scfg_base)
+ goto err;
+ }
+
+ fsl_dp_priv.ccsr_rcpm_base = fsl_of_iomap("fsl,qoriq-rcpm-2.1");
+ if (!fsl_dp_priv.ccsr_rcpm_base)
+ goto err;
+
+ fsl_dp_priv.ccsr_ddr_base = fsl_of_iomap("fsl,qoriq-memory-controller");
+ if (!fsl_dp_priv.ccsr_ddr_base)
+ goto err;
+
+ np = fsl_get_gpio_node();
+ fsl_dp_priv.ccsr_gpio1_base = of_iomap(np, 0);
+ if (!fsl_dp_priv.ccsr_gpio1_base)
+ goto err;
+
+ fsl_dp_priv.ccsr_cpc_base =
+ fsl_of_iomap("fsl,t1040-l3-cache-controller");
+ if (!fsl_dp_priv.ccsr_cpc_base) {
+ fsl_dp_priv.ccsr_cpc_base =
+ fsl_of_iomap("fsl,t1023-l3-cache-controlle");
+ if (!fsl_dp_priv.ccsr_cpc_base)
+ goto err;
+ }
+
+ fsl_dp_priv.dcsr_epu_base = fsl_of_iomap("fsl,dcsr-epu");
+ if (!fsl_dp_priv.dcsr_epu_base)
+ goto err;
+
+ fsl_dp_priv.dcsr_npc_base = fsl_of_iomap("fsl,dcsr-cnpc");
+ if (!fsl_dp_priv.dcsr_npc_base)
+ goto err;
+
+ fsl_dp_priv.dcsr_rcpm_base = fsl_of_iomap("fsl,dcsr-rcpm");
+ if (!fsl_dp_priv.dcsr_rcpm_base)
+ goto err;
+
+ return 0;
+
+err:
+ fsl_dp_iounmap();
+ return -1;
+}
+
+static void __init fsl_dp_iounmap(void)
+{
+ void **p = (void *)&fsl_dp_priv;
+ int i;
+
+ for (i = 0; i < sizeof(struct fsl_iomap)/sizeof(void *); i++) {
+ iounmap(*p);
+ *p = NULL;
+ p++;
+ }
+}
+
+int __init fsl_deepsleep_init(void)
+{
+ return fsl_dp_iomap();
+}
diff --git a/arch/powerpc/platforms/85xx/qoriq_pm.c b/arch/powerpc/platforms/85xx/qoriq_pm.c
index c97ef8f..ff6e46a 100644
--- a/arch/powerpc/platforms/85xx/qoriq_pm.c
+++ b/arch/powerpc/platforms/85xx/qoriq_pm.c
@@ -14,6 +14,7 @@
#include <linux/kernel.h>
#include <linux/suspend.h>
#include <linux/of_platform.h>
+#include <linux/of_fdt.h>
#include <asm/fsl_pm.h>
@@ -27,6 +28,11 @@ static int qoriq_suspend_enter(suspend_state_t state)
case PM_SUSPEND_STANDBY:
ret = qoriq_pm_ops->plat_enter_sleep(FSL_PM_SLEEP);
break;
+
+ case PM_SUSPEND_MEM:
+ ret = qoriq_pm_ops->plat_enter_sleep(FSL_PM_DEEP_SLEEP);
+ break;
+
default:
ret = -EINVAL;
}
@@ -40,9 +46,24 @@ static int qoriq_suspend_valid(suspend_state_t state)
if (state == PM_SUSPEND_STANDBY && (pm_modes & FSL_PM_SLEEP))
return 1;
+ if (state == PM_SUSPEND_MEM && (pm_modes & FSL_PM_DEEP_SLEEP))
+ return 1;
+
return 0;
}
+static const char * const boards_deepsleep[] __initconst = {
+ "fsl,T1024QDS",
+ "fsl,T1024RDB",
+ "fsl,T1040QDS",
+ "fsl,T1040RDB",
+ "fsl,T1040D4RDB",
+ "fsl,T1042QDS",
+ "fsl,T1042D4RDB",
+ "fsl,T1042RDB",
+ "fsl,T1042RDB_PI",
+};
+
static const struct platform_suspend_ops qoriq_suspend_ops = {
.valid = qoriq_suspend_valid,
.enter = qoriq_suspend_enter,
@@ -53,6 +74,10 @@ static int __init qoriq_suspend_init(void)
/* support sleep by default */
pm_modes |= FSL_PM_SLEEP;
+ if (of_flat_dt_match(of_get_flat_dt_root(), boards_deepsleep) &&
+ !fsl_deepsleep_init())
+ pm_modes |= FSL_PM_DEEP_SLEEP;
+
suspend_set_ops(&qoriq_suspend_ops);
return 0;
}
diff --git a/arch/powerpc/platforms/85xx/t104x_deepsleep.S b/arch/powerpc/platforms/85xx/t104x_deepsleep.S
new file mode 100644
index 0000000..aefce20
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/t104x_deepsleep.S
@@ -0,0 +1,531 @@
+/*
+ * Enter and resume from deep sleep state
+ *
+ * Copyright 2016 Freescale Semiconductor Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <asm/page.h>
+#include <asm/ppc_asm.h>
+#include <asm/reg.h>
+#include <asm/asm-offsets.h>
+#include <asm/mmu.h>
+
+/*
+ * the number of bytes occupied by one register
+ * the value of 8 is compatible with both 32-bit and 64-bit registers
+ */
+#define STRIDE_SIZE 8
+
+/* GPR0 - GPR31 */
+#define BOOKE_GPR0_OFF 0x0000
+#define BOOKE_GPR_COUNT 32
+/* IVOR0 - IVOR42 */
+#define BOOKE_IVOR0_OFF (BOOKE_GPR0_OFF + BOOKE_GPR_COUNT * STRIDE_SIZE)
+#define BOOKE_IVOR_COUNT 43
+/* SPRG0 - SPRG9 */
+#define BOOKE_SPRG0_OFF (BOOKE_IVOR0_OFF + BOOKE_IVOR_COUNT * STRIDE_SIZE)
+#define BOOKE_SPRG_COUNT 10
+/* IVPR */
+#define BOOKE_IVPR_OFF (BOOKE_SPRG0_OFF + BOOKE_SPRG_COUNT * STRIDE_SIZE)
+
+#define BOOKE_LR_OFF (BOOKE_IVPR_OFF + STRIDE_SIZE)
+#define BOOKE_MSR_OFF (BOOKE_LR_OFF + STRIDE_SIZE)
+#define BOOKE_TBU_OFF (BOOKE_MSR_OFF + STRIDE_SIZE)
+#define BOOKE_TBL_OFF (BOOKE_TBU_OFF + STRIDE_SIZE)
+#define BOOKE_EPCR_OFF (BOOKE_TBL_OFF + STRIDE_SIZE)
+#define BOOKE_HID0_OFF (BOOKE_EPCR_OFF + STRIDE_SIZE)
+#define BOOKE_PIR_OFF (BOOKE_HID0_OFF + STRIDE_SIZE)
+#define BOOKE_PID0_OFF (BOOKE_PIR_OFF + STRIDE_SIZE)
+#define BOOKE_BUCSR_OFF (BOOKE_PID0_OFF + STRIDE_SIZE)
+
+#define BUFFER_SIZE (BOOKE_BUCSR_OFF + STRIDE_SIZE)
+
+#undef SAVE_GPR
+#define SAVE_GPR(gpr, offset) \
+ PPC_STL gpr, offset(r10)
+
+#define RESTORE_GPR(gpr, offset) \
+ PPC_LL gpr, offset(r10)
+
+#define SAVE_SPR(spr, offset) \
+ mfspr r0, spr; \
+ PPC_STL r0, offset(r10)
+
+#define RESTORE_SPR(spr, offset) \
+ PPC_LL r0, offset(r10); \
+ mtspr spr, r0
+
+#define SAVE_ALL_GPR \
+ SAVE_GPR(r1, BOOKE_GPR0_OFF + STRIDE_SIZE * 1) ;\
+ SAVE_GPR(r2, BOOKE_GPR0_OFF + STRIDE_SIZE * 2) ;\
+ SAVE_GPR(r13, BOOKE_GPR0_OFF + STRIDE_SIZE * 13) ;\
+ SAVE_GPR(r14, BOOKE_GPR0_OFF + STRIDE_SIZE * 14) ;\
+ SAVE_GPR(r15, BOOKE_GPR0_OFF + STRIDE_SIZE * 15) ;\
+ SAVE_GPR(r16, BOOKE_GPR0_OFF + STRIDE_SIZE * 16) ;\
+ SAVE_GPR(r17, BOOKE_GPR0_OFF + STRIDE_SIZE * 17) ;\
+ SAVE_GPR(r18, BOOKE_GPR0_OFF + STRIDE_SIZE * 18) ;\
+ SAVE_GPR(r19, BOOKE_GPR0_OFF + STRIDE_SIZE * 19) ;\
+ SAVE_GPR(r20, BOOKE_GPR0_OFF + STRIDE_SIZE * 20) ;\
+ SAVE_GPR(r21, BOOKE_GPR0_OFF + STRIDE_SIZE * 21) ;\
+ SAVE_GPR(r22, BOOKE_GPR0_OFF + STRIDE_SIZE * 22) ;\
+ SAVE_GPR(r23, BOOKE_GPR0_OFF + STRIDE_SIZE * 23) ;\
+ SAVE_GPR(r24, BOOKE_GPR0_OFF + STRIDE_SIZE * 24) ;\
+ SAVE_GPR(r25, BOOKE_GPR0_OFF + STRIDE_SIZE * 25) ;\
+ SAVE_GPR(r26, BOOKE_GPR0_OFF + STRIDE_SIZE * 26) ;\
+ SAVE_GPR(r27, BOOKE_GPR0_OFF + STRIDE_SIZE * 27) ;\
+ SAVE_GPR(r28, BOOKE_GPR0_OFF + STRIDE_SIZE * 28) ;\
+ SAVE_GPR(r29, BOOKE_GPR0_OFF + STRIDE_SIZE * 29) ;\
+ SAVE_GPR(r30, BOOKE_GPR0_OFF + STRIDE_SIZE * 30) ;\
+ SAVE_GPR(r31, BOOKE_GPR0_OFF + STRIDE_SIZE * 31)
+
+#define RESTORE_ALL_GPR \
+ RESTORE_GPR(r1, BOOKE_GPR0_OFF + STRIDE_SIZE * 1) ;\
+ RESTORE_GPR(r2, BOOKE_GPR0_OFF + STRIDE_SIZE * 2) ;\
+ RESTORE_GPR(r13, BOOKE_GPR0_OFF + STRIDE_SIZE * 13) ;\
+ RESTORE_GPR(r14, BOOKE_GPR0_OFF + STRIDE_SIZE * 14) ;\
+ RESTORE_GPR(r15, BOOKE_GPR0_OFF + STRIDE_SIZE * 15) ;\
+ RESTORE_GPR(r16, BOOKE_GPR0_OFF + STRIDE_SIZE * 16) ;\
+ RESTORE_GPR(r17, BOOKE_GPR0_OFF + STRIDE_SIZE * 17) ;\
+ RESTORE_GPR(r18, BOOKE_GPR0_OFF + STRIDE_SIZE * 18) ;\
+ RESTORE_GPR(r19, BOOKE_GPR0_OFF + STRIDE_SIZE * 19) ;\
+ RESTORE_GPR(r20, BOOKE_GPR0_OFF + STRIDE_SIZE * 20) ;\
+ RESTORE_GPR(r21, BOOKE_GPR0_OFF + STRIDE_SIZE * 21) ;\
+ RESTORE_GPR(r22, BOOKE_GPR0_OFF + STRIDE_SIZE * 22) ;\
+ RESTORE_GPR(r23, BOOKE_GPR0_OFF + STRIDE_SIZE * 23) ;\
+ RESTORE_GPR(r24, BOOKE_GPR0_OFF + STRIDE_SIZE * 24) ;\
+ RESTORE_GPR(r25, BOOKE_GPR0_OFF + STRIDE_SIZE * 25) ;\
+ RESTORE_GPR(r26, BOOKE_GPR0_OFF + STRIDE_SIZE * 26) ;\
+ RESTORE_GPR(r27, BOOKE_GPR0_OFF + STRIDE_SIZE * 27) ;\
+ RESTORE_GPR(r28, BOOKE_GPR0_OFF + STRIDE_SIZE * 28) ;\
+ RESTORE_GPR(r29, BOOKE_GPR0_OFF + STRIDE_SIZE * 29) ;\
+ RESTORE_GPR(r30, BOOKE_GPR0_OFF + STRIDE_SIZE * 30) ;\
+ RESTORE_GPR(r31, BOOKE_GPR0_OFF + STRIDE_SIZE * 31)
+
+#define SAVE_ALL_SPRG \
+ SAVE_SPR(SPRN_SPRG0, BOOKE_SPRG0_OFF + STRIDE_SIZE * 0) ;\
+ SAVE_SPR(SPRN_SPRG1, BOOKE_SPRG0_OFF + STRIDE_SIZE * 1) ;\
+ SAVE_SPR(SPRN_SPRG2, BOOKE_SPRG0_OFF + STRIDE_SIZE * 2) ;\
+ SAVE_SPR(SPRN_SPRG3, BOOKE_SPRG0_OFF + STRIDE_SIZE * 3) ;\
+ SAVE_SPR(SPRN_SPRG4, BOOKE_SPRG0_OFF + STRIDE_SIZE * 4) ;\
+ SAVE_SPR(SPRN_SPRG5, BOOKE_SPRG0_OFF + STRIDE_SIZE * 5) ;\
+ SAVE_SPR(SPRN_SPRG6, BOOKE_SPRG0_OFF + STRIDE_SIZE * 6) ;\
+ SAVE_SPR(SPRN_SPRG7, BOOKE_SPRG0_OFF + STRIDE_SIZE * 7) ;\
+ SAVE_SPR(SPRN_SPRG8, BOOKE_SPRG0_OFF + STRIDE_SIZE * 8) ;\
+ SAVE_SPR(SPRN_SPRG9, BOOKE_SPRG0_OFF + STRIDE_SIZE * 9)
+
+#define RESTORE_ALL_SPRG \
+ RESTORE_SPR(SPRN_SPRG0, BOOKE_SPRG0_OFF + STRIDE_SIZE * 0) ;\
+ RESTORE_SPR(SPRN_SPRG1, BOOKE_SPRG0_OFF + STRIDE_SIZE * 1) ;\
+ RESTORE_SPR(SPRN_SPRG2, BOOKE_SPRG0_OFF + STRIDE_SIZE * 2) ;\
+ RESTORE_SPR(SPRN_SPRG3, BOOKE_SPRG0_OFF + STRIDE_SIZE * 3) ;\
+ RESTORE_SPR(SPRN_SPRG4, BOOKE_SPRG0_OFF + STRIDE_SIZE * 4) ;\
+ RESTORE_SPR(SPRN_SPRG5, BOOKE_SPRG0_OFF + STRIDE_SIZE * 5) ;\
+ RESTORE_SPR(SPRN_SPRG6, BOOKE_SPRG0_OFF + STRIDE_SIZE * 6) ;\
+ RESTORE_SPR(SPRN_SPRG7, BOOKE_SPRG0_OFF + STRIDE_SIZE * 7) ;\
+ RESTORE_SPR(SPRN_SPRG8, BOOKE_SPRG0_OFF + STRIDE_SIZE * 8) ;\
+ RESTORE_SPR(SPRN_SPRG9, BOOKE_SPRG0_OFF + STRIDE_SIZE * 9)
+
+#define SAVE_ALL_IVOR \
+ SAVE_SPR(SPRN_IVOR0, BOOKE_IVOR0_OFF + STRIDE_SIZE * 0) ;\
+ SAVE_SPR(SPRN_IVOR1, BOOKE_IVOR0_OFF + STRIDE_SIZE * 1) ;\
+ SAVE_SPR(SPRN_IVOR2, BOOKE_IVOR0_OFF + STRIDE_SIZE * 2) ;\
+ SAVE_SPR(SPRN_IVOR3, BOOKE_IVOR0_OFF + STRIDE_SIZE * 3) ;\
+ SAVE_SPR(SPRN_IVOR4, BOOKE_IVOR0_OFF + STRIDE_SIZE * 4) ;\
+ SAVE_SPR(SPRN_IVOR5, BOOKE_IVOR0_OFF + STRIDE_SIZE * 5) ;\
+ SAVE_SPR(SPRN_IVOR6, BOOKE_IVOR0_OFF + STRIDE_SIZE * 6) ;\
+ SAVE_SPR(SPRN_IVOR7, BOOKE_IVOR0_OFF + STRIDE_SIZE * 7) ;\
+ SAVE_SPR(SPRN_IVOR8, BOOKE_IVOR0_OFF + STRIDE_SIZE * 8) ;\
+ SAVE_SPR(SPRN_IVOR9, BOOKE_IVOR0_OFF + STRIDE_SIZE * 9) ;\
+ SAVE_SPR(SPRN_IVOR10, BOOKE_IVOR0_OFF + STRIDE_SIZE * 10) ;\
+ SAVE_SPR(SPRN_IVOR11, BOOKE_IVOR0_OFF + STRIDE_SIZE * 11) ;\
+ SAVE_SPR(SPRN_IVOR12, BOOKE_IVOR0_OFF + STRIDE_SIZE * 12) ;\
+ SAVE_SPR(SPRN_IVOR13, BOOKE_IVOR0_OFF + STRIDE_SIZE * 13) ;\
+ SAVE_SPR(SPRN_IVOR14, BOOKE_IVOR0_OFF + STRIDE_SIZE * 14) ;\
+ SAVE_SPR(SPRN_IVOR15, BOOKE_IVOR0_OFF + STRIDE_SIZE * 15) ;\
+ SAVE_SPR(SPRN_IVOR35, BOOKE_IVOR0_OFF + STRIDE_SIZE * 35) ;\
+ SAVE_SPR(SPRN_IVOR36, BOOKE_IVOR0_OFF + STRIDE_SIZE * 36) ;\
+ SAVE_SPR(SPRN_IVOR37, BOOKE_IVOR0_OFF + STRIDE_SIZE * 37) ;\
+ SAVE_SPR(SPRN_IVOR38, BOOKE_IVOR0_OFF + STRIDE_SIZE * 38) ;\
+ SAVE_SPR(SPRN_IVOR39, BOOKE_IVOR0_OFF + STRIDE_SIZE * 39) ;\
+ SAVE_SPR(SPRN_IVOR40, BOOKE_IVOR0_OFF + STRIDE_SIZE * 40) ;\
+ SAVE_SPR(SPRN_IVOR41, BOOKE_IVOR0_OFF + STRIDE_SIZE * 41)
+
+#define RESTORE_ALL_IVOR \
+ RESTORE_SPR(SPRN_IVOR0, BOOKE_IVOR0_OFF + STRIDE_SIZE * 0) ;\
+ RESTORE_SPR(SPRN_IVOR1, BOOKE_IVOR0_OFF + STRIDE_SIZE * 1) ;\
+ RESTORE_SPR(SPRN_IVOR2, BOOKE_IVOR0_OFF + STRIDE_SIZE * 2) ;\
+ RESTORE_SPR(SPRN_IVOR3, BOOKE_IVOR0_OFF + STRIDE_SIZE * 3) ;\
+ RESTORE_SPR(SPRN_IVOR4, BOOKE_IVOR0_OFF + STRIDE_SIZE * 4) ;\
+ RESTORE_SPR(SPRN_IVOR5, BOOKE_IVOR0_OFF + STRIDE_SIZE * 5) ;\
+ RESTORE_SPR(SPRN_IVOR6, BOOKE_IVOR0_OFF + STRIDE_SIZE * 6) ;\
+ RESTORE_SPR(SPRN_IVOR7, BOOKE_IVOR0_OFF + STRIDE_SIZE * 7) ;\
+ RESTORE_SPR(SPRN_IVOR8, BOOKE_IVOR0_OFF + STRIDE_SIZE * 8) ;\
+ RESTORE_SPR(SPRN_IVOR9, BOOKE_IVOR0_OFF + STRIDE_SIZE * 9) ;\
+ RESTORE_SPR(SPRN_IVOR10, BOOKE_IVOR0_OFF + STRIDE_SIZE * 10) ;\
+ RESTORE_SPR(SPRN_IVOR11, BOOKE_IVOR0_OFF + STRIDE_SIZE * 11) ;\
+ RESTORE_SPR(SPRN_IVOR12, BOOKE_IVOR0_OFF + STRIDE_SIZE * 12) ;\
+ RESTORE_SPR(SPRN_IVOR13, BOOKE_IVOR0_OFF + STRIDE_SIZE * 13) ;\
+ RESTORE_SPR(SPRN_IVOR14, BOOKE_IVOR0_OFF + STRIDE_SIZE * 14) ;\
+ RESTORE_SPR(SPRN_IVOR15, BOOKE_IVOR0_OFF + STRIDE_SIZE * 15) ;\
+ RESTORE_SPR(SPRN_IVOR35, BOOKE_IVOR0_OFF + STRIDE_SIZE * 35) ;\
+ RESTORE_SPR(SPRN_IVOR36, BOOKE_IVOR0_OFF + STRIDE_SIZE * 36) ;\
+ RESTORE_SPR(SPRN_IVOR37, BOOKE_IVOR0_OFF + STRIDE_SIZE * 37) ;\
+ RESTORE_SPR(SPRN_IVOR38, BOOKE_IVOR0_OFF + STRIDE_SIZE * 38) ;\
+ RESTORE_SPR(SPRN_IVOR39, BOOKE_IVOR0_OFF + STRIDE_SIZE * 39) ;\
+ RESTORE_SPR(SPRN_IVOR40, BOOKE_IVOR0_OFF + STRIDE_SIZE * 40) ;\
+ RESTORE_SPR(SPRN_IVOR41, BOOKE_IVOR0_OFF + STRIDE_SIZE * 41)
+
+/* reset time base to prevent from overflow */
+#define DELAY(count) \
+ li r3, count; \
+ li r4, 0; \
+ mtspr SPRN_TBWL, r4; \
+101: mfspr r4, SPRN_TBRL; \
+ cmpw r4, r3; \
+ blt 101b
+
+#define FSL_DIS_ALL_IRQ \
+ mfmsr r8; \
+ rlwinm r8, r8, 0, ~MSR_CE; \
+ rlwinm r8, r8, 0, ~MSR_ME; \
+ rlwinm r8, r8, 0, ~MSR_EE; \
+ rlwinm r8, r8, 0, ~MSR_DE; \
+ mtmsr r8; \
+ isync
+
+ .section .data
+ .align 6
+regs_buffer:
+ .space BUFFER_SIZE
+
+ .section .text
+/*
+ * Save CPU registers
+ * r3 : the base address of the buffer which stores the values of registers
+ */
+e5500_cpu_state_save:
+ /* store the base address to r10 */
+ mr r10, r3
+
+ SAVE_ALL_GPR
+ SAVE_ALL_SPRG
+ SAVE_ALL_IVOR
+
+ SAVE_SPR(SPRN_IVPR, BOOKE_IVPR_OFF)
+ SAVE_SPR(SPRN_PID0, BOOKE_PID0_OFF)
+ SAVE_SPR(SPRN_EPCR, BOOKE_EPCR_OFF)
+ SAVE_SPR(SPRN_HID0, BOOKE_HID0_OFF)
+ SAVE_SPR(SPRN_PIR, BOOKE_PIR_OFF)
+ SAVE_SPR(SPRN_BUCSR, BOOKE_BUCSR_OFF)
+1:
+ mfspr r5, SPRN_TBRU
+ mfspr r4, SPRN_TBRL
+ SAVE_GPR(r5, BOOKE_TBU_OFF)
+ SAVE_GPR(r4, BOOKE_TBL_OFF)
+ mfspr r3, SPRN_TBRU
+ cmpw r3, r5
+ bne 1b
+
+ blr
+
+/*
+ * Restore CPU registers
+ * r3 : the base address of the buffer which stores the values of registers
+ */
+e5500_cpu_state_restore:
+ /* store the base address to r10 */
+ mr r10, r3
+
+ RESTORE_ALL_GPR
+ RESTORE_ALL_SPRG
+ RESTORE_ALL_IVOR
+
+ RESTORE_SPR(SPRN_IVPR, BOOKE_IVPR_OFF)
+ RESTORE_SPR(SPRN_PID0, BOOKE_PID0_OFF)
+ RESTORE_SPR(SPRN_EPCR, BOOKE_EPCR_OFF)
+ RESTORE_SPR(SPRN_HID0, BOOKE_HID0_OFF)
+ RESTORE_SPR(SPRN_PIR, BOOKE_PIR_OFF)
+ RESTORE_SPR(SPRN_BUCSR, BOOKE_BUCSR_OFF)
+
+ li r0, 0
+ mtspr SPRN_TBWL, r0
+ RESTORE_SPR(SPRN_TBWU, BOOKE_TBU_OFF)
+ RESTORE_SPR(SPRN_TBWL, BOOKE_TBL_OFF)
+
+ blr
+
+#define CPC_CPCCSR0 0x0
+#define CPC_CPCCSR0_CPCFL 0x800
+
+/*
+ * Flush the CPC cache.
+ * r3 : the base address of CPC
+ */
+flush_cpc_cache:
+ lwz r6, CPC_CPCCSR0(r3)
+ ori r6, r6, CPC_CPCCSR0_CPCFL
+ stw r6, CPC_CPCCSR0(r3)
+ sync
+
+ /* Wait until completing the flush */
+1: lwz r6, CPC_CPCCSR0(r3)
+ andi. r6, r6, CPC_CPCCSR0_CPCFL
+ bne 1b
+
+ blr
+
+/*
+ * the last stage to enter deep sleep
+ */
+ .align 6
+_GLOBAL(fsl_dp_enter_low)
+deepsleep_start:
+ LOAD_REG_ADDR(r9, buf_tmp)
+ /* save the return address and MSR */
+ mflr r8
+ PPC_STL r8, 0(r9)
+ mfmsr r8
+ PPC_STL r8, 8(r9)
+ mfspr r8, SPRN_TCR
+ PPC_STL r8, 16(r9)
+ mfcr r8
+ PPC_STL r8, 24(r9)
+
+ li r8, 0
+ mtspr SPRN_TCR, r8
+
+ /* save the parameters */
+ PPC_STL r3, 32(r9)
+
+ LOAD_REG_ADDR(r3, regs_buffer)
+ bl e5500_cpu_state_save
+
+ /* restore the parameters */
+ LOAD_REG_ADDR(r9, buf_tmp)
+ PPC_LL r31, 32(r9)
+
+ /* flush caches inside CPU */
+ LOAD_REG_ADDR(r3, cur_cpu_spec)
+ PPC_LL r3, 0(r3)
+ PPC_LL r3, CPU_DOWN_FLUSH(r3)
+ PPC_LCMPI 0, r3, 0
+ beq 10f
+#ifdef CONFIG_PPC64
+ PPC_LL r3, 0(r3)
+#endif
+ mtctr r3
+ bctrl
+10:
+ /* Flush the CPC cache */
+ PPC_LL r3, CCSR_CPC_BASE(r31)
+ bl flush_cpc_cache
+
+ /* prefecth TLB */
+#define CCSR_GPIO1_GPDAT 0x0008
+#define CCSR_GPIO1_GPDAT_29 0x4
+ PPC_LL r11, CCSR_GPIO1_BASE(r31)
+ addi r11, r11, CCSR_GPIO1_GPDAT
+ lwz r10, 0(r11)
+
+#define CCSR_RCPM_PCPH15SETR 0x0b4
+#define CCSR_RCPM_PCPH15SETR_CORE0 0x1
+ PPC_LL r12, CCSR_RCPM_BASE(r31)
+ addi r12, r12, CCSR_RCPM_PCPH15SETR
+ lwz r10, 0(r12)
+
+#define CCSR_DDR_SDRAM_CFG_2 0x114
+#define CCSR_DDR_SDRAM_CFG_2_FRC_SR 0x80000000
+ PPC_LL r13, CCSR_DDR_BASE(r31)
+ addi r13, r13, CCSR_DDR_SDRAM_CFG_2
+ lwz r10, 0(r13)
+
+#define DCSR_EPU_EPGCR 0x000
+#define DCSR_EPU_EPGCR_GCE 0x80000000
+ PPC_LL r14, DCSR_EPU_BASE(r31)
+ addi r14, r14, DCSR_EPU_EPGCR
+ lwz r10, 0(r14)
+
+#define DCSR_EPU_EPECR15 0x33C
+#define DCSR_EPU_EPECR15_IC0 0x80000000
+ PPC_LL r15, DCSR_EPU_BASE(r31)
+ addi r15, r15, DCSR_EPU_EPECR15
+ lwz r10, 0(r15)
+
+#define CCSR_SCFG_QMIFRSTCR 0x40c
+#define CCSR_SCFG_QMIFRSTCR_QMIFRST 0x80000000
+ PPC_LL r16, CCSR_SCFG_BASE(r31)
+ addi r16, r16, CCSR_SCFG_QMIFRSTCR
+ lwz r10, 0(r16)
+
+ LOAD_REG_ADDR(r8, deepsleep_start)
+ LOAD_REG_ADDR(r9, deepsleep_end)
+
+ /* prefecth code to cache so that executing code after disable DDR */
+1: icbtls 2, 0, r8
+ addi r8, r8, 64
+ cmpw r8, r9
+ blt 1b
+ sync
+
+ FSL_DIS_ALL_IRQ
+
+ /*
+ * Place DDR controller in self refresh mode.
+ * From here on, can't access DDR any more.
+ */
+ lwz r10, 0(r13)
+ oris r10, r10, CCSR_DDR_SDRAM_CFG_2_FRC_SR at h
+ stw r10, 0(r13)
+ lwz r10, 0(r13)
+ sync
+
+ DELAY(500)
+
+ /*
+ * Set GPIO1_29 to lock the signal MCKE down during deep sleep.
+ * The bootloader will clear it when wakeup.
+ */
+ lwz r10, 0(r11)
+ ori r10, r10, CCSR_GPIO1_GPDAT_29
+ stw r10, 0(r11)
+ lwz r10, 0(r11)
+
+ DELAY(100)
+
+ /* Reset QMan system bus interface */
+ lwz r10, 0(r16)
+ oris r10, r10, CCSR_SCFG_QMIFRSTCR_QMIFRST at h
+ stw r10, 0(r16)
+ lwz r10, 0(r16)
+
+ /* Enable all EPU Counters */
+ li r10, 0
+ oris r10, r10, DCSR_EPU_EPGCR_GCE at h
+ stw r10, 0(r14)
+ lwz r10, 0(r14)
+
+ /* Enable SCU15 to trigger on RCPM Concentrator 0 */
+ lwz r10, 0(r15)
+ oris r10, r10, DCSR_EPU_EPECR15_IC0 at h
+ stw r10, 0(r15)
+ lwz r10, 0(r15)
+
+ /* put Core0 in PH15 mode, trigger EPU FSM */
+ lwz r10, 0(r12)
+ ori r10, r10, CCSR_RCPM_PCPH15SETR_CORE0
+ stw r10, 0(r12)
+2:
+ b 2b
+
+ /*
+ * Leave some space to prevent prefeching instruction
+ * beyond deepsleep_end. The space also can be used as heap.
+ */
+buf_tmp:
+ .space 128
+ .align 6
+deepsleep_end:
+
+ .align 12
+#ifdef CONFIG_PPC32
+_GLOBAL(fsl_booke_deep_sleep_resume)
+ /* disable interrupts */
+ FSL_DIS_ALL_IRQ
+
+#define ENTRY_DEEPSLEEP_SETUP
+#define ENTRY_MAPPING_BOOT_SETUP
+#include <../../kernel/fsl_booke_entry_mapping.S>
+#undef ENTRY_DEEPSLEEP_SETUP
+#undef ENTRY_MAPPING_BOOT_SETUP
+
+ li r3, 0
+ mfspr r4, SPRN_PIR
+ bl call_setup_cpu
+
+ /* Load each CAM entry */
+ LOAD_REG_ADDR(r3, tlbcam_index)
+ lwz r3, 0(r3)
+ mtctr r3
+ li r9, 0
+3: mr r3, r9
+ bl loadcam_entry
+ addi r9, r9, 1
+ bdnz 3b
+
+ /* restore cpu registers */
+ LOAD_REG_ADDR(r3, regs_buffer)
+ bl e5500_cpu_state_restore
+
+ /* restore return address */
+ LOAD_REG_ADDR(r3, buf_tmp)
+ lwz r4, 16(r3)
+ mtspr SPRN_TCR, r4
+ lwz r4, 0(r3)
+ mtlr r4
+ lwz r4, 8(r3)
+ mtmsr r4
+ lwz r4, 24(r3)
+ mtcr r4
+
+ blr
+
+#else /* CONFIG_PPC32 */
+
+_GLOBAL(fsl_booke_deep_sleep_resume)
+ /* disable interrupts */
+ FSL_DIS_ALL_IRQ
+
+ /* switch to 64-bit mode */
+ bl .enable_64b_mode
+
+ /* set TOC pointer */
+ bl .relative_toc
+
+ /* setup initial TLBs, switch to kernel space ... */
+ bl .start_initialization_book3e
+
+ /* address space changed, set TOC pointer again */
+ bl .relative_toc
+
+ /* call a cpu state restore handler */
+ LOAD_REG_ADDR(r23, cur_cpu_spec)
+ ld r23,0(r23)
+ ld r23,CPU_SPEC_RESTORE(r23)
+ cmpdi 0,r23,0
+ beq 1f
+ ld r23,0(r23)
+ mtctr r23
+ bctrl
+1:
+ LOAD_REG_ADDR(r3, regs_buffer)
+ bl e5500_cpu_state_restore
+
+ /* Load each CAM entry */
+ LOAD_REG_ADDR(r3, tlbcam_index)
+ lwz r3, 0(r3)
+ mtctr r3
+ li r0, 0
+3: mr r3, r0
+ bl loadcam_entry
+ addi r0, r0, 1
+ bdnz 3b
+
+ /* restore return address */
+ LOAD_REG_ADDR(r3, buf_tmp)
+ ld r4, 16(r3)
+ mtspr SPRN_TCR, r4
+ ld r4, 0(r3)
+ mtlr r4
+ ld r4, 8(r3)
+ mtmsr r4
+ ld r4, 24(r3)
+ mtcr r4
+
+ blr
+
+#endif /* CONFIG_PPC32 */
diff --git a/arch/powerpc/sysdev/fsl_rcpm.c b/arch/powerpc/sysdev/fsl_rcpm.c
index e5447ac..c2d8d37 100644
--- a/arch/powerpc/sysdev/fsl_rcpm.c
+++ b/arch/powerpc/sysdev/fsl_rcpm.c
@@ -249,7 +249,7 @@ static int rcpm_v2_plat_enter_sleep(int state)
{
u32 *pmcsr_reg = &rcpm_v2_regs->powmgtcsr;
int ret = 0;
- int result;
+ int result, cpu;
switch (state) {
case FSL_PM_SLEEP:
@@ -269,6 +269,12 @@ static int rcpm_v2_plat_enter_sleep(int state)
ret = -ETIMEDOUT;
}
break;
+ case FSL_PM_DEEP_SLEEP:
+ cpu = smp_processor_id();
+ rcpm_v2_irq_mask(cpu);
+ ret = fsl_enter_deepsleep();
+ rcpm_v2_irq_unmask(cpu);
+ break;
default:
pr_warn("Unknown platform PM state (%d)\n", state);
ret = -EINVAL;
--
1.9.1
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