From b6f7ee5d1f980ffa63e22749e2deae6caa57227e Mon Sep 17 00:00:00 2001 From: Ley Foon Tan Date: Fri, 22 Mar 2019 01:24:00 +0800 Subject: ddr: altera: stratix10: Move SDRAM size check to SDRAM driver Move SDRAM size check to SDRAM driver. sdram_calculate_size() is called in SDRAM initialization already, avoid calling twice in size check function. Signed-off-by: Ley Foon Tan --- drivers/ddr/altera/sdram_s10.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'drivers/ddr/altera/sdram_s10.c') diff --git a/drivers/ddr/altera/sdram_s10.c b/drivers/ddr/altera/sdram_s10.c index a48567c109..033ccca437 100644 --- a/drivers/ddr/altera/sdram_s10.c +++ b/drivers/ddr/altera/sdram_s10.c @@ -134,6 +134,17 @@ static int poll_hmc_clock_status(void) SYSMGR_HMC_CLK_STATUS_MSK, true, 1000, false); } +static void sdram_size_check(void) +{ + /* Sanity check ensure correct SDRAM size specified */ + debug("DDR: Running SDRAM size sanity check\n"); + if (get_ram_size(0, gd->ram_size) != gd->ram_size) { + puts("DDR: SDRAM size check failed!\n"); + hang(); + } + debug("DDR: SDRAM size check passed!\n"); +} + /** * sdram_mmr_init_full() - Function to initialize SDRAM MMR * @@ -339,6 +350,8 @@ int sdram_mmr_init_full(unsigned int unused) else gd->ram_size = size; + printf("DDR: %lld MiB\n", gd->ram_size >> 20); + /* Enable or disable the SDRAM ECC */ if (CTRLCFG1_CFG_CTRL_EN_ECC(ctrlcfg1)) { setbits_le32(SOCFPGA_SDR_ADDRESS + ECCCTRL1, @@ -361,6 +374,8 @@ int sdram_mmr_init_full(unsigned int unused) DDR_HMC_ECCCTL2_AWB_EN_SET_MSK)); } + sdram_size_check(); + debug("DDR: HMC init success\n"); return 0; } -- cgit v1.2.3 From 6cd7134e7309a53f015a402e52e5863f29e366fd Mon Sep 17 00:00:00 2001 From: Ley Foon Tan Date: Fri, 22 Mar 2019 01:24:01 +0800 Subject: ddr: altera: Stratix10: Add multi-banks DRAM size check Stratix 10 maps dram from 0 to 128GB. There is a 2GB hole in the memory for peripherals and other IO from 2GB to 4GB. However the dram controller ignores upper address bits for smaller dram configurations. Example: a 4GB dram maps to multiple locations, every 4GB on the address. Signed-off-by: Dalon Westergreen Signed-off-by: Ley Foon Tan --- drivers/ddr/altera/sdram_s10.c | 46 +++++++++++++++++++++++++++++++++++++----- 1 file changed, 41 insertions(+), 5 deletions(-) (limited to 'drivers/ddr/altera/sdram_s10.c') diff --git a/drivers/ddr/altera/sdram_s10.c b/drivers/ddr/altera/sdram_s10.c index 033ccca437..462c8feaef 100644 --- a/drivers/ddr/altera/sdram_s10.c +++ b/drivers/ddr/altera/sdram_s10.c @@ -7,12 +7,14 @@ #include #include #include +#include #include #include #include #include #include #include +#include DECLARE_GLOBAL_DATA_PTR; @@ -134,14 +136,35 @@ static int poll_hmc_clock_status(void) SYSMGR_HMC_CLK_STATUS_MSK, true, 1000, false); } -static void sdram_size_check(void) +static void sdram_size_check(bd_t *bd) { + phys_size_t total_ram_check = 0; + phys_size_t ram_check = 0; + phys_addr_t start = 0; + int bank; + /* Sanity check ensure correct SDRAM size specified */ debug("DDR: Running SDRAM size sanity check\n"); - if (get_ram_size(0, gd->ram_size) != gd->ram_size) { + + for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) { + start = bd->bi_dram[bank].start; + while (ram_check < bd->bi_dram[bank].size) { + ram_check += get_ram_size((void *)(start + ram_check), + (phys_size_t)SZ_1G); + } + total_ram_check += ram_check; + ram_check = 0; + } + + /* If the ram_size is 2GB smaller, we can assume the IO space is + * not mapped in. gd->ram_size is the actual size of the dram + * not the accessible size. + */ + if (total_ram_check != gd->ram_size) { puts("DDR: SDRAM size check failed!\n"); hang(); } + debug("DDR: SDRAM size check passed!\n"); } @@ -155,6 +178,8 @@ int sdram_mmr_init_full(unsigned int unused) u32 update_value, io48_value, ddrioctl; u32 i; int ret; + phys_size_t hw_size; + bd_t bd = {0}; /* Enable access to DDR from CPU master */ clrbits_le32(CCU_REG_ADDR(CCU_CPU0_MPRT_ADBASE_DDRREG), @@ -346,9 +371,20 @@ int sdram_mmr_init_full(unsigned int unused) unsigned long long size = sdram_calculate_size(); /* If the size is invalid, use default Config size */ if (size <= 0) - gd->ram_size = PHYS_SDRAM_1_SIZE; + hw_size = PHYS_SDRAM_1_SIZE; else - gd->ram_size = size; + hw_size = size; + + /* Get bank configuration from devicetree */ + ret = fdtdec_decode_ram_size(gd->fdt_blob, NULL, 0, NULL, + (phys_size_t *)&gd->ram_size, &bd); + if (ret) { + puts("DDR: Failed to decode memory node\n"); + return -1; + } + + if (gd->ram_size != hw_size) + printf("DDR: Warning: DRAM size from device tree mismatch with hardware.\n"); printf("DDR: %lld MiB\n", gd->ram_size >> 20); @@ -374,7 +410,7 @@ int sdram_mmr_init_full(unsigned int unused) DDR_HMC_ECCCTL2_AWB_EN_SET_MSK)); } - sdram_size_check(); + sdram_size_check(&bd); debug("DDR: HMC init success\n"); return 0; -- cgit v1.2.3 From 456d45261bc6abee1ffedd0f9cbd35aada5c0ff3 Mon Sep 17 00:00:00 2001 From: Ley Foon Tan Date: Fri, 22 Mar 2019 01:24:05 +0800 Subject: ddr: altera: Stratix10: Add ECC memory scrubbing Scrub memory content if ECC is enabled and it is not from warm reset boot. Enable icache and dcache before scrub memory and use "DC ZVA" instruction to clear memory to zeros. This instruction writes a cache line at a time and it can prevent false ECC error trigger if write cache line partially. Signed-off-by: Ley Foon Tan --- arch/arm/mach-socfpga/include/mach/sdram_s10.h | 9 +++ drivers/ddr/altera/sdram_s10.c | 81 ++++++++++++++++++++++++++ 2 files changed, 90 insertions(+) (limited to 'drivers/ddr/altera/sdram_s10.c') diff --git a/arch/arm/mach-socfpga/include/mach/sdram_s10.h b/arch/arm/mach-socfpga/include/mach/sdram_s10.h index ca68594445..f39206ca1e 100644 --- a/arch/arm/mach-socfpga/include/mach/sdram_s10.h +++ b/arch/arm/mach-socfpga/include/mach/sdram_s10.h @@ -22,6 +22,7 @@ int sdram_calibration_full(void); #define ECCCTRL1 0x100 #define ECCCTRL2 0x104 #define ERRINTEN 0x110 +#define ERRINTENS 0x114 #define INTMODE 0x11c #define INTSTAT 0x120 #define AUTOWB_CORRADDR 0x138 @@ -52,6 +53,10 @@ int sdram_calibration_full(void); #define DDR_HMC_SEQ2CORE_INT_RESP_MASK BIT(3) #define DDR_HMC_HPSINTFCSEL_ENABLE_MASK 0x001f1f1f +#define DDR_HMC_ERRINTEN_INTMASK \ + (DDR_HMC_ERRINTEN_SERRINTEN_EN_SET_MSK | \ + DDR_HMC_ERRINTEN_DERRINTEN_EN_SET_MSK) + /* NOC DDR scheduler */ #define DDR_SCH_ID_COREID 0 #define DDR_SCH_ID_REVID 0x4 @@ -180,4 +185,8 @@ int sdram_calibration_full(void); #define CALTIMING9_CFG_4_ACT_TO_ACT(x) \ (((x) >> 0) & 0xFF) +/* Firewall DDR scheduler MPFE */ +#define FW_HMC_ADAPTOR_REG_ADDR 0xf8020004 +#define FW_HMC_ADAPTOR_MPU_MASK BIT(0) + #endif /* _SDRAM_S10_H_ */ diff --git a/drivers/ddr/altera/sdram_s10.c b/drivers/ddr/altera/sdram_s10.c index 462c8feaef..e4d4a02ca2 100644 --- a/drivers/ddr/altera/sdram_s10.c +++ b/drivers/ddr/altera/sdram_s10.c @@ -23,6 +23,8 @@ static const struct socfpga_system_manager *sysmgr_regs = #define DDR_CONFIG(A, B, C, R) (((A) << 24) | ((B) << 16) | ((C) << 8) | (R)) +#define PGTABLE_OFF 0x4000 + /* The followring are the supported configurations */ u32 ddr_config[] = { /* DDR_CONFIG(Address order,Bank,Column,Row) */ @@ -136,6 +138,76 @@ static int poll_hmc_clock_status(void) SYSMGR_HMC_CLK_STATUS_MSK, true, 1000, false); } +static void sdram_clear_mem(phys_addr_t addr, phys_size_t size) +{ + phys_size_t i; + + if (addr % CONFIG_SYS_CACHELINE_SIZE) { + printf("DDR: address 0x%llx is not cacheline size aligned.\n", + addr); + hang(); + } + + if (size % CONFIG_SYS_CACHELINE_SIZE) { + printf("DDR: size 0x%llx is not multiple of cacheline size\n", + size); + hang(); + } + + /* Use DC ZVA instruction to clear memory to zeros by a cache line */ + for (i = 0; i < size; i = i + CONFIG_SYS_CACHELINE_SIZE) { + asm volatile("dc zva, %0" + : + : "r"(addr) + : "memory"); + addr += CONFIG_SYS_CACHELINE_SIZE; + } +} + +static void sdram_init_ecc_bits(bd_t *bd) +{ + phys_size_t size, size_init; + phys_addr_t start_addr; + int bank = 0; + unsigned int start = get_timer(0); + + icache_enable(); + + start_addr = bd->bi_dram[0].start; + size = bd->bi_dram[0].size; + + /* Initialize small block for page table */ + memset((void *)start_addr, 0, PGTABLE_SIZE + PGTABLE_OFF); + gd->arch.tlb_addr = start_addr + PGTABLE_OFF; + gd->arch.tlb_size = PGTABLE_SIZE; + start_addr += PGTABLE_SIZE + PGTABLE_OFF; + size -= (PGTABLE_OFF + PGTABLE_SIZE); + dcache_enable(); + + while (1) { + while (size) { + size_init = min((phys_addr_t)SZ_1G, (phys_addr_t)size); + sdram_clear_mem(start_addr, size_init); + size -= size_init; + start_addr += size_init; + WATCHDOG_RESET(); + } + + bank++; + if (bank >= CONFIG_NR_DRAM_BANKS) + break; + + start_addr = bd->bi_dram[bank].start; + size = bd->bi_dram[bank].size; + } + + dcache_disable(); + icache_disable(); + + printf("SDRAM-ECC: Initialized success with %d ms\n", + (unsigned int)get_timer(start)); +} + static void sdram_size_check(bd_t *bd) { phys_size_t total_ram_check = 0; @@ -400,6 +472,15 @@ int sdram_mmr_init_full(unsigned int unused) setbits_le32(SOCFPGA_SDR_ADDRESS + ECCCTRL2, (DDR_HMC_ECCCTL2_RMW_EN_SET_MSK | DDR_HMC_ECCCTL2_AWB_EN_SET_MSK)); + writel(DDR_HMC_ERRINTEN_INTMASK, + SOCFPGA_SDR_ADDRESS + ERRINTENS); + + /* Enable non-secure writes to HMC Adapter for SDRAM ECC */ + writel(FW_HMC_ADAPTOR_MPU_MASK, FW_HMC_ADAPTOR_REG_ADDR); + + /* Initialize memory content if not from warm reset */ + if (!cpu_has_been_warmreset()) + sdram_init_ecc_bits(&bd); } else { clrbits_le32(SOCFPGA_SDR_ADDRESS + ECCCTRL1, (DDR_HMC_ECCCTL_AWB_CNT_RST_SET_MSK | -- cgit v1.2.3