From e0752bc18422ec0dc93a770e96b1c2f44ee64ed7 Mon Sep 17 00:00:00 2001 From: Siva Durga Prasad Paladugu Date: Thu, 2 Feb 2017 01:10:46 +0530 Subject: arm64: zynqmp: Define routines for mmio write and read Define routines of mmio write and read functionalities for zynqmp platform. Also do not call SMC from SPL because SPL is running before ATF in EL3 that's why SMCs can't be called because there is nothing to call. zynqmp_mmio*() are doing direct read/write accesses and this patch does the same. PMUFW is up and running at this time and there is a way to talk to pmufw via IPI but there is no reason to implement IPI stuff in SPL if we need just simple read for getting clock driver to work. Also make invoke_smc as global so that it can be reused in multile places where ever possible. Signed-off-by: Siva Durga Prasad Paladugu Signed-off-by: Michal Simek --- arch/arm/include/asm/arch-zynqmp/sys_proto.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'arch/arm/include/asm') diff --git a/arch/arm/include/asm/arch-zynqmp/sys_proto.h b/arch/arm/include/asm/arch-zynqmp/sys_proto.h index 7b11895481b..4ae1bb6eef7 100644 --- a/arch/arm/include/asm/arch-zynqmp/sys_proto.h +++ b/arch/arm/include/asm/arch-zynqmp/sys_proto.h @@ -8,6 +8,8 @@ #ifndef _ASM_ARCH_SYS_PROTO_H #define _ASM_ARCH_SYS_PROTO_H +#define PAYLOAD_ARG_CNT 5 + int zynq_slcr_get_mio_pin_status(const char *periph); unsigned int zynqmp_get_silicon_version(void); @@ -16,4 +18,9 @@ void psu_init(void); void handoff_setup(void); +int zynqmp_mmio_write(const u32 address, const u32 mask, const u32 value); +int zynqmp_mmio_read(const u32 address, u32 *value); +int invoke_smc(u32 pm_api_id, u32 arg0, u32 arg1, u32 arg2, u32 arg3, + u32 *ret_payload); + #endif /* _ASM_ARCH_SYS_PROTO_H */ -- cgit v1.2.3 From fb4000e87178bf20aeb0d6c6a71b0e25ff8dcda3 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Tue, 7 Feb 2017 14:32:26 +0100 Subject: arm64: zynqmp: Check pmufw version If PMUFW version is not v0.3 then panic. ZynqMP switch to CCF based clock driver which requires PMUFW to be present at certain version. This patch ensure that you use correct and tested PMUFW binary. Signed-off-by: Michal Simek --- arch/arm/cpu/armv8/zynqmp/cpu.c | 35 ++++++++++++++++++++++++++++ arch/arm/include/asm/arch-zynqmp/sys_proto.h | 1 + board/xilinx/zynqmp/zynqmp.c | 8 +++++++ include/configs/xilinx_zynqmp.h | 2 ++ 4 files changed, 46 insertions(+) (limited to 'arch/arm/include/asm') diff --git a/arch/arm/cpu/armv8/zynqmp/cpu.c b/arch/arm/cpu/armv8/zynqmp/cpu.c index f7ed179c186..94ecf906602 100644 --- a/arch/arm/cpu/armv8/zynqmp/cpu.c +++ b/arch/arm/cpu/armv8/zynqmp/cpu.c @@ -129,6 +129,41 @@ int invoke_smc(u32 pm_api_id, u32 arg0, u32 arg1, u32 arg2, u32 arg3, return regs.regs[0]; } +#define ZYNQMP_SIP_SVC_GET_API_VERSION 0xC2000001 + +#define ZYNQMP_PM_VERSION_MAJOR 0 +#define ZYNQMP_PM_VERSION_MINOR 3 +#define ZYNQMP_PM_VERSION_MAJOR_SHIFT 16 +#define ZYNQMP_PM_VERSION_MINOR_MASK 0xFFFF + +#define ZYNQMP_PM_VERSION \ + ((ZYNQMP_PM_VERSION_MAJOR << ZYNQMP_PM_VERSION_MAJOR_SHIFT) | \ + ZYNQMP_PM_VERSION_MINOR) + +#if defined(CONFIG_CLK_ZYNQMP) +void zynqmp_pmufw_version(void) +{ + int ret; + u32 ret_payload[PAYLOAD_ARG_CNT]; + u32 pm_api_version; + + ret = invoke_smc(ZYNQMP_SIP_SVC_GET_API_VERSION, 0, 0, 0, 0, + ret_payload); + pm_api_version = ret_payload[1]; + + if (ret) + panic("PMUFW is not found - Please load it!\n"); + + printf("PMUFW:\tv%d.%d\n", + pm_api_version >> ZYNQMP_PM_VERSION_MAJOR_SHIFT, + pm_api_version & ZYNQMP_PM_VERSION_MINOR_MASK); + + if (pm_api_version != ZYNQMP_PM_VERSION) + panic("PMUFW version error. Expected: v%d.%d\n", + ZYNQMP_PM_VERSION_MAJOR, ZYNQMP_PM_VERSION_MINOR); +} +#endif + int zynqmp_mmio_write(const u32 address, const u32 mask, const u32 value) diff --git a/arch/arm/include/asm/arch-zynqmp/sys_proto.h b/arch/arm/include/asm/arch-zynqmp/sys_proto.h index 4ae1bb6eef7..d91d98a1196 100644 --- a/arch/arm/include/asm/arch-zynqmp/sys_proto.h +++ b/arch/arm/include/asm/arch-zynqmp/sys_proto.h @@ -18,6 +18,7 @@ void psu_init(void); void handoff_setup(void); +void zynqmp_pmufw_version(void); int zynqmp_mmio_write(const u32 address, const u32 mask, const u32 value); int zynqmp_mmio_read(const u32 address, u32 *value); int invoke_smc(u32 pm_api_id, u32 arg0, u32 arg1, u32 arg2, u32 arg3, diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c index 3849b5885df..51a3d9f276b 100644 --- a/board/xilinx/zynqmp/zynqmp.c +++ b/board/xilinx/zynqmp/zynqmp.c @@ -113,6 +113,14 @@ static char *zynqmp_get_silicon_idcode_name(void) } #endif +int board_early_init_f(void) +{ +#if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_CLK_ZYNQMP) + zynqmp_pmufw_version(); +#endif + return 0; +} + #define ZYNQMP_VERSION_SIZE 9 int board_init(void) diff --git a/include/configs/xilinx_zynqmp.h b/include/configs/xilinx_zynqmp.h index 52fe9d80d44..86a4579fbdb 100644 --- a/include/configs/xilinx_zynqmp.h +++ b/include/configs/xilinx_zynqmp.h @@ -296,4 +296,6 @@ #endif #endif +#define CONFIG_BOARD_EARLY_INIT_F + #endif /* __XILINX_ZYNQMP_H */ -- cgit v1.2.3