From aeb901f2a6c19e399354345ad1acd67420401a10 Mon Sep 17 00:00:00 2001 From: Hongbo Zhang Date: Thu, 21 Jul 2016 18:09:38 +0800 Subject: [PATCH] ARMv7: PSCI: ls102xa: add more PSCI v1.0 functions implemention This patch implements PSCI functions for ls102xa SoC following PSCI v1.0, they are as the list: psci_version, psci_features, psci_cpu_suspend, psci_affinity_info, psci_system_reset, psci_system_off. Tested on LS1021aQDS, LS1021aTWR. Signed-off-by: Wang Dongsheng Signed-off-by: Hongbo Zhang Reviewed-by: York Sun --- arch/arm/cpu/armv7/ls102xa/psci.S | 103 ++++++++++++++++++++- arch/arm/include/asm/arch-ls102xa/config.h | 1 + board/freescale/ls1021aqds/Makefile | 1 + board/freescale/ls1021aqds/psci.S | 33 +++++++ board/freescale/ls1021atwr/Makefile | 1 + board/freescale/ls1021atwr/psci.S | 25 +++++ include/configs/ls1021aqds.h | 3 + include/configs/ls1021atwr.h | 1 + 8 files changed, 166 insertions(+), 2 deletions(-) create mode 100644 board/freescale/ls1021aqds/psci.S create mode 100644 board/freescale/ls1021atwr/psci.S diff --git a/arch/arm/cpu/armv7/ls102xa/psci.S b/arch/arm/cpu/armv7/ls102xa/psci.S index cba9c1e1aa..8f386800f6 100644 --- a/arch/arm/cpu/armv7/ls102xa/psci.S +++ b/arch/arm/cpu/armv7/ls102xa/psci.S @@ -12,19 +12,72 @@ #include #include +#define RCPM_TWAITSR 0x04C + #define SCFG_CORE0_SFT_RST 0x130 #define SCFG_CORESRENCR 0x204 -#define DCFG_CCSR_BRR 0x0E4 -#define DCFG_CCSR_SCRATCHRW1 0x200 +#define DCFG_CCSR_RSTCR 0x0B0 +#define DCFG_CCSR_RSTCR_RESET_REQ 0x2 +#define DCFG_CCSR_BRR 0x0E4 +#define DCFG_CCSR_SCRATCHRW1 0x200 + +#define PSCI_FN_PSCI_VERSION_FEATURE_MASK 0x0 +#define PSCI_FN_CPU_SUSPEND_FEATURE_MASK 0x0 +#define PSCI_FN_CPU_OFF_FEATURE_MASK 0x0 +#define PSCI_FN_CPU_ON_FEATURE_MASK 0x0 +#define PSCI_FN_AFFINITY_INFO_FEATURE_MASK 0x0 +#define PSCI_FN_SYSTEM_OFF_FEATURE_MASK 0x0 +#define PSCI_FN_SYSTEM_RESET_FEATURE_MASK 0x0 .pushsection ._secure.text, "ax" .arch_extension sec + .align 5 + #define ONE_MS (GENERIC_TIMER_CLK / 1000) #define RESET_WAIT (30 * ONE_MS) +.globl psci_version +psci_version: + movw r0, #0 + movt r0, #1 + + bx lr + +_ls102x_psci_supported_table: + .word ARM_PSCI_0_2_FN_PSCI_VERSION + .word PSCI_FN_PSCI_VERSION_FEATURE_MASK + .word ARM_PSCI_0_2_FN_CPU_SUSPEND + .word PSCI_FN_CPU_SUSPEND_FEATURE_MASK + .word ARM_PSCI_0_2_FN_CPU_OFF + .word PSCI_FN_CPU_OFF_FEATURE_MASK + .word ARM_PSCI_0_2_FN_CPU_ON + .word PSCI_FN_CPU_ON_FEATURE_MASK + .word ARM_PSCI_0_2_FN_AFFINITY_INFO + .word PSCI_FN_AFFINITY_INFO_FEATURE_MASK + .word ARM_PSCI_0_2_FN_SYSTEM_OFF + .word PSCI_FN_SYSTEM_OFF_FEATURE_MASK + .word ARM_PSCI_0_2_FN_SYSTEM_RESET + .word PSCI_FN_SYSTEM_RESET_FEATURE_MASK + .word 0 + .word ARM_PSCI_RET_NI + +.globl psci_features +psci_features: + adr r2, _ls102x_psci_supported_table +1: ldr r3, [r2] + cmp r3, #0 + beq out_psci_features + cmp r1, r3 + addne r2, r2, #8 + bne 1b + +out_psci_features: + ldr r0, [r2, #4] + bx lr + @ r0: return value ARM_PSCI_RET_SUCCESS or ARM_PSCI_RET_INVAL @ r1: input target CPU ID in MPIDR format, original value in r1 may be dropped @ r4: output validated CPU ID if ARM_PSCI_RET_SUCCESS returns, meaningless for @@ -141,6 +194,52 @@ out_psci_cpu_on: psci_cpu_off: bl psci_cpu_off_common +1: wfi + b 1b + +.globl psci_affinity_info +psci_affinity_info: + push {lr} + + mov r0, #ARM_PSCI_RET_INVAL + + @ Verify Affinity level + cmp r2, #0 + bne out_affinity_info + + bl psci_check_target_cpu_id + cmp r0, #ARM_PSCI_RET_INVAL + beq out_affinity_info + mov r1, r4 + + @ Get RCPM base address + movw r4, #(CONFIG_SYS_FSL_RCPM_ADDR & 0xffff) + movt r4, #(CONFIG_SYS_FSL_RCPM_ADDR >> 16) + + mov r0, #PSCI_AFFINITY_LEVEL_ON + + @ Detect target CPU state + ldr r2, [r4, #RCPM_TWAITSR] + rev r2, r2 + lsr r2, r2, r1 + ands r2, r2, #1 + beq out_affinity_info + + mov r0, #PSCI_AFFINITY_LEVEL_OFF + +out_affinity_info: + pop {pc} + +.globl psci_system_reset +psci_system_reset: + @ Get DCFG base address + movw r1, #(CONFIG_SYS_FSL_GUTS_ADDR & 0xffff) + movt r1, #(CONFIG_SYS_FSL_GUTS_ADDR >> 16) + + mov r2, #DCFG_CCSR_RSTCR_RESET_REQ + rev r2, r2 + str r2, [r1, #DCFG_CCSR_RSTCR] + 1: wfi b 1b diff --git a/arch/arm/include/asm/arch-ls102xa/config.h b/arch/arm/include/asm/arch-ls102xa/config.h index 67a43117f9..e0b118537e 100644 --- a/arch/arm/include/asm/arch-ls102xa/config.h +++ b/arch/arm/include/asm/arch-ls102xa/config.h @@ -32,6 +32,7 @@ #define CONFIG_SYS_FSL_SERDES_ADDR (CONFIG_SYS_IMMR + 0x00ea0000) #define CONFIG_SYS_FSL_GUTS_ADDR (CONFIG_SYS_IMMR + 0x00ee0000) #define CONFIG_SYS_FSL_LS1_CLK_ADDR (CONFIG_SYS_IMMR + 0x00ee1000) +#define CONFIG_SYS_FSL_RCPM_ADDR (CONFIG_SYS_IMMR + 0x00ee2000) #define CONFIG_SYS_NS16550_COM1 (CONFIG_SYS_IMMR + 0x011c0500) #define CONFIG_SYS_NS16550_COM2 (CONFIG_SYS_IMMR + 0x011d0500) #define CONFIG_SYS_DCU_ADDR (CONFIG_SYS_IMMR + 0x01ce0000) diff --git a/board/freescale/ls1021aqds/Makefile b/board/freescale/ls1021aqds/Makefile index ab0234412c..f0390c129f 100644 --- a/board/freescale/ls1021aqds/Makefile +++ b/board/freescale/ls1021aqds/Makefile @@ -8,3 +8,4 @@ obj-y += ls1021aqds.o obj-y += ddr.o obj-y += eth.o obj-$(CONFIG_FSL_DCU_FB) += dcu.o +obj-$(CONFIG_ARMV7_PSCI) += psci.o diff --git a/board/freescale/ls1021aqds/psci.S b/board/freescale/ls1021aqds/psci.S new file mode 100644 index 0000000000..598168c7b0 --- /dev/null +++ b/board/freescale/ls1021aqds/psci.S @@ -0,0 +1,33 @@ +/* + * Copyright 2016 NXP Semiconductor. + * Author: Wang Dongsheng + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include + +#include +#include + + .pushsection ._secure.text, "ax" + + .arch_extension sec + + .align 5 + +.globl psci_system_off +psci_system_off: + @ Get QIXIS base address + movw r1, #(QIXIS_BASE & 0xffff) + movt r1, #(QIXIS_BASE >> 16) + + ldrb r2, [r1, #QIXIS_PWR_CTL] + orr r2, r2, #QIXIS_PWR_CTL_POWEROFF + strb r2, [r1, #QIXIS_PWR_CTL] + +1: wfi + b 1b + + .popsection diff --git a/board/freescale/ls1021atwr/Makefile b/board/freescale/ls1021atwr/Makefile index 01296c04b2..5238b158d7 100644 --- a/board/freescale/ls1021atwr/Makefile +++ b/board/freescale/ls1021atwr/Makefile @@ -6,3 +6,4 @@ obj-y += ls1021atwr.o obj-$(CONFIG_FSL_DCU_FB) += dcu.o +obj-$(CONFIG_ARMV7_PSCI) += psci.o diff --git a/board/freescale/ls1021atwr/psci.S b/board/freescale/ls1021atwr/psci.S new file mode 100644 index 0000000000..bec73568d3 --- /dev/null +++ b/board/freescale/ls1021atwr/psci.S @@ -0,0 +1,25 @@ +/* + * Copyright 2016 NXP Semiconductor. + * Author: Wang Dongsheng + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include + +#include +#include + + .pushsection ._secure.text, "ax" + + .arch_extension sec + + .align 5 + +.globl psci_system_off +psci_system_off: +1: wfi + b 1b + + .popsection diff --git a/include/configs/ls1021aqds.h b/include/configs/ls1021aqds.h index eb444ebd59..ba3331f0a4 100644 --- a/include/configs/ls1021aqds.h +++ b/include/configs/ls1021aqds.h @@ -10,6 +10,7 @@ #define CONFIG_LS102XA #define CONFIG_ARMV7_PSCI +#define CONFIG_ARMV7_PSCI_1_0 #define CONFIG_ARMV7_PSCI_NR_CPUS CONFIG_MAX_CPUS #define CONFIG_SYS_FSL_CLK @@ -280,6 +281,8 @@ unsigned long get_board_ddr_clk(void); #define QIXIS_LBMAP_SHIFT 0 #define QIXIS_LBMAP_DFLTBANK 0x00 #define QIXIS_LBMAP_ALTBANK 0x04 +#define QIXIS_PWR_CTL 0x21 +#define QIXIS_PWR_CTL_POWEROFF 0x80 #define QIXIS_RST_CTL_RESET 0x44 #define QIXIS_RCFG_CTL_RECONFIG_IDLE 0x20 #define QIXIS_RCFG_CTL_RECONFIG_START 0x21 diff --git a/include/configs/ls1021atwr.h b/include/configs/ls1021atwr.h index c588fdd34f..5b6e0a55ae 100644 --- a/include/configs/ls1021atwr.h +++ b/include/configs/ls1021atwr.h @@ -10,6 +10,7 @@ #define CONFIG_LS102XA #define CONFIG_ARMV7_PSCI +#define CONFIG_ARMV7_PSCI_1_0 #define CONFIG_ARMV7_PSCI_NR_CPUS CONFIG_MAX_CPUS #define CONFIG_SYS_FSL_CLK -- 2.25.1