diff options
Diffstat (limited to 'arch/arm/cpu/armv8/zynqmp/cpu.c')
| -rw-r--r-- | arch/arm/cpu/armv8/zynqmp/cpu.c | 114 |
1 files changed, 108 insertions, 6 deletions
diff --git a/arch/arm/cpu/armv8/zynqmp/cpu.c b/arch/arm/cpu/armv8/zynqmp/cpu.c index b0f12955a1..94ecf90660 100644 --- a/arch/arm/cpu/armv8/zynqmp/cpu.c +++ b/arch/arm/cpu/armv8/zynqmp/cpu.c @@ -38,12 +38,6 @@ static struct mm_region zynqmp_mem_map[] = { PTE_BLOCK_NON_SHARE | PTE_BLOCK_PXN | PTE_BLOCK_UXN }, { - .virt = 0xffe00000UL, - .phys = 0xffe00000UL, - .size = 0x00200000UL, - .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) | - PTE_BLOCK_INNER_SHARE - }, { .virt = 0x400000000UL, .phys = 0x400000000UL, .size = 0x200000000UL, @@ -104,3 +98,111 @@ unsigned int zynqmp_get_silicon_version(void) return ZYNQMP_CSU_VERSION_SILICON; } + +#define ZYNQMP_MMIO_READ 0xC2000014 +#define ZYNQMP_MMIO_WRITE 0xC2000013 + +#ifndef CONFIG_SPL_BUILD +int invoke_smc(u32 pm_api_id, u32 arg0, u32 arg1, u32 arg2, u32 arg3, + u32 *ret_payload) +{ + /* + * Added SIP service call Function Identifier + * Make sure to stay in x0 register + */ + struct pt_regs regs; + + regs.regs[0] = pm_api_id; + regs.regs[1] = ((u64)arg1 << 32) | arg0; + regs.regs[2] = ((u64)arg3 << 32) | arg2; + + smc_call(®s); + + if (ret_payload != NULL) { + ret_payload[0] = (u32)regs.regs[0]; + ret_payload[1] = upper_32_bits(regs.regs[0]); + ret_payload[2] = (u32)regs.regs[1]; + ret_payload[3] = upper_32_bits(regs.regs[1]); + ret_payload[4] = (u32)regs.regs[2]; + } + + 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) +{ + return invoke_smc(ZYNQMP_MMIO_WRITE, address, mask, value, 0, NULL); +} + +int zynqmp_mmio_read(const u32 address, u32 *value) +{ + u32 ret_payload[PAYLOAD_ARG_CNT]; + u32 ret; + + if (!value) + return -EINVAL; + + ret = invoke_smc(ZYNQMP_MMIO_READ, address, 0, 0, 0, ret_payload); + *value = ret_payload[1]; + + return ret; +} +#else +int zynqmp_mmio_write(const u32 address, + const u32 mask, + const u32 value) +{ + u32 data; + u32 value_local = value; + + zynqmp_mmio_read(address, &data); + data &= ~mask; + value_local &= mask; + value_local |= data; + writel(value_local, (ulong)address); + return 0; +} + +int zynqmp_mmio_read(const u32 address, u32 *value) +{ + *value = readl((ulong)address); + return 0; +} +#endif |