diff options
Diffstat (limited to 'drivers/ddr/altera/sdram_s10.c')
| -rw-r--r-- | drivers/ddr/altera/sdram_s10.c | 320 |
1 files changed, 19 insertions, 301 deletions
diff --git a/drivers/ddr/altera/sdram_s10.c b/drivers/ddr/altera/sdram_s10.c index 82d9a13efa..93c15dd18b 100644 --- a/drivers/ddr/altera/sdram_s10.c +++ b/drivers/ddr/altera/sdram_s10.c @@ -14,32 +14,15 @@ #include <reset.h> #include "sdram_s10.h" #include <wait_bit.h> -#include <asm/arch/firewall_s10.h> -#include <asm/arch/system_manager.h> +#include <asm/arch/firewall.h> #include <asm/arch/reset_manager.h> #include <asm/io.h> #include <linux/sizes.h> -struct altera_sdram_priv { - struct ram_info info; - struct reset_ctl_bulk resets; -}; - -struct altera_sdram_platdata { - void __iomem *hmc; - void __iomem *ddr_sch; - void __iomem *iomhc; -}; - DECLARE_GLOBAL_DATA_PTR; -static const struct socfpga_system_manager *sysmgr_regs = - (void *)SOCFPGA_SYSMGR_ADDRESS; - #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) */ @@ -66,28 +49,6 @@ u32 ddr_config[] = { DDR_CONFIG(1, 4, 10, 17), }; -static u32 hmc_readl(struct altera_sdram_platdata *plat, u32 reg) -{ - return readl(plat->iomhc + reg); -} - -static u32 hmc_ecc_readl(struct altera_sdram_platdata *plat, u32 reg) -{ - return readl(plat->hmc + reg); -} - -static u32 hmc_ecc_writel(struct altera_sdram_platdata *plat, - u32 data, u32 reg) -{ - return writel(data, plat->hmc + reg); -} - -static u32 ddr_sch_writel(struct altera_sdram_platdata *plat, u32 data, - u32 reg) -{ - return writel(data, plat->ddr_sch + reg); -} - int match_ddr_conf(u32 ddr_conf) { int i; @@ -99,192 +60,12 @@ int match_ddr_conf(u32 ddr_conf) return 0; } -static int emif_clear(struct altera_sdram_platdata *plat) -{ - hmc_ecc_writel(plat, 0, RSTHANDSHAKECTRL); - - return wait_for_bit_le32((const void *)(plat->hmc + - RSTHANDSHAKESTAT), - DDR_HMC_RSTHANDSHAKE_MASK, - false, 1000, false); -} - -static int emif_reset(struct altera_sdram_platdata *plat) -{ - u32 c2s, s2c, ret; - - c2s = hmc_ecc_readl(plat, RSTHANDSHAKECTRL) & DDR_HMC_RSTHANDSHAKE_MASK; - s2c = hmc_ecc_readl(plat, RSTHANDSHAKESTAT) & DDR_HMC_RSTHANDSHAKE_MASK; - - debug("DDR: c2s=%08x s2c=%08x nr0=%08x nr1=%08x nr2=%08x dst=%08x\n", - c2s, s2c, hmc_readl(plat, NIOSRESERVED0), - hmc_readl(plat, NIOSRESERVED1), hmc_readl(plat, NIOSRESERVED2), - hmc_readl(plat, DRAMSTS)); - - if (s2c && emif_clear(plat)) { - printf("DDR: emif_clear() failed\n"); - return -1; - } - - debug("DDR: Triggerring emif reset\n"); - hmc_ecc_writel(plat, DDR_HMC_CORE2SEQ_INT_REQ, RSTHANDSHAKECTRL); - - /* if seq2core[3] = 0, we are good */ - ret = wait_for_bit_le32((const void *)(plat->hmc + - RSTHANDSHAKESTAT), - DDR_HMC_SEQ2CORE_INT_RESP_MASK, - false, 1000, false); - if (ret) { - printf("DDR: failed to get ack from EMIF\n"); - return ret; - } - - ret = emif_clear(plat); - if (ret) { - printf("DDR: emif_clear() failed\n"); - return ret; - } - - debug("DDR: %s triggered successly\n", __func__); - return 0; -} - -static int poll_hmc_clock_status(void) -{ - return wait_for_bit_le32(&sysmgr_regs->hmc_clk, - 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; - 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"); - - 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"); -} - -/** - * sdram_calculate_size() - Calculate SDRAM size - * - * Calculate SDRAM device size based on SDRAM controller parameters. - * Size is specified in bytes. - */ -static phys_size_t sdram_calculate_size(struct altera_sdram_platdata *plat) -{ - u32 dramaddrw = hmc_readl(plat, DRAMADDRW); - - phys_size_t size = 1 << (DRAMADDRW_CFG_CS_ADDR_WIDTH(dramaddrw) + - DRAMADDRW_CFG_BANK_GRP_ADDR_WIDTH(dramaddrw) + - DRAMADDRW_CFG_BANK_ADDR_WIDTH(dramaddrw) + - DRAMADDRW_CFG_ROW_ADDR_WIDTH(dramaddrw) + - DRAMADDRW_CFG_COL_ADDR_WIDTH(dramaddrw)); - - size *= (2 << (hmc_ecc_readl(plat, DDRIOCTRL) & - DDR_HMC_DDRIOCTRL_IOSIZE_MSK)); - - return size; -} - /** * sdram_mmr_init_full() - Function to initialize SDRAM MMR * * Initialize the SDRAM MMR. */ -static int sdram_mmr_init_full(struct udevice *dev) +int sdram_mmr_init_full(struct udevice *dev) { struct altera_sdram_platdata *plat = dev->platdata; struct altera_sdram_priv *priv = dev_get_priv(dev); @@ -324,6 +105,20 @@ static int sdram_mmr_init_full(struct udevice *dev) clrbits_le32(CCU_REG_ADDR(CCU_IOM_MPRT_ADBASE_MEMSPACE1E), CCU_ADBASE_DI_MASK); + /* Enable access to DDR from TCU */ + clrbits_le32(CCU_REG_ADDR(CCU_TCU_MPRT_ADBASE_MEMSPACE0), + CCU_ADBASE_DI_MASK); + clrbits_le32(CCU_REG_ADDR(CCU_TCU_MPRT_ADBASE_MEMSPACE1A), + CCU_ADBASE_DI_MASK); + clrbits_le32(CCU_REG_ADDR(CCU_TCU_MPRT_ADBASE_MEMSPACE1B), + CCU_ADBASE_DI_MASK); + clrbits_le32(CCU_REG_ADDR(CCU_TCU_MPRT_ADBASE_MEMSPACE1C), + CCU_ADBASE_DI_MASK); + clrbits_le32(CCU_REG_ADDR(CCU_TCU_MPRT_ADBASE_MEMSPACE1D), + CCU_ADBASE_DI_MASK); + clrbits_le32(CCU_REG_ADDR(CCU_TCU_MPRT_ADBASE_MEMSPACE1E), + CCU_ADBASE_DI_MASK); + /* this enables nonsecure access to DDR */ /* mpuregion0addr_limit */ FW_MPU_DDR_SCR_WRITEL(0xFFFF0000, FW_MPU_DDR_SCR_MPUREGION0ADDR_LIMIT); @@ -512,9 +307,6 @@ static int sdram_mmr_init_full(struct udevice *dev) DDR_HMC_ECCCTL2_AWB_EN_SET_MSK)); hmc_ecc_writel(plat, DDR_HMC_ERRINTEN_INTMASK, 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); @@ -528,6 +320,9 @@ static int sdram_mmr_init_full(struct udevice *dev) DDR_HMC_ECCCTL2_AWB_EN_SET_MSK)); } + /* Enable non-secure reads/writes to HMC Adapter for SDRAM ECC */ + writel(FW_HMC_ADAPTOR_MPU_MASK, FW_HMC_ADAPTOR_REG_ADDR); + sdram_size_check(&bd); priv->info.base = bd.bi_dram[0].start; @@ -537,80 +332,3 @@ static int sdram_mmr_init_full(struct udevice *dev) return 0; } -static int altera_sdram_ofdata_to_platdata(struct udevice *dev) -{ - struct altera_sdram_platdata *plat = dev->platdata; - fdt_addr_t addr; - - addr = dev_read_addr_index(dev, 0); - if (addr == FDT_ADDR_T_NONE) - return -EINVAL; - plat->ddr_sch = (void __iomem *)addr; - - addr = dev_read_addr_index(dev, 1); - if (addr == FDT_ADDR_T_NONE) - return -EINVAL; - plat->iomhc = (void __iomem *)addr; - - addr = dev_read_addr_index(dev, 2); - if (addr == FDT_ADDR_T_NONE) - return -EINVAL; - plat->hmc = (void __iomem *)addr; - - return 0; -} - -static int altera_sdram_probe(struct udevice *dev) -{ - int ret; - struct altera_sdram_priv *priv = dev_get_priv(dev); - - ret = reset_get_bulk(dev, &priv->resets); - if (ret) { - dev_err(dev, "Can't get reset: %d\n", ret); - return -ENODEV; - } - reset_deassert_bulk(&priv->resets); - - if (sdram_mmr_init_full(dev) != 0) { - puts("SDRAM init failed.\n"); - goto failed; - } - - return 0; - -failed: - reset_release_bulk(&priv->resets); - return -ENODEV; -} - -static int altera_sdram_get_info(struct udevice *dev, - struct ram_info *info) -{ - struct altera_sdram_priv *priv = dev_get_priv(dev); - - info->base = priv->info.base; - info->size = priv->info.size; - - return 0; -} - -static struct ram_ops altera_sdram_ops = { - .get_info = altera_sdram_get_info, -}; - -static const struct udevice_id altera_sdram_ids[] = { - { .compatible = "altr,sdr-ctl-s10" }, - { /* sentinel */ } -}; - -U_BOOT_DRIVER(altera_sdram) = { - .name = "altr_sdr_ctl", - .id = UCLASS_RAM, - .of_match = altera_sdram_ids, - .ops = &altera_sdram_ops, - .ofdata_to_platdata = altera_sdram_ofdata_to_platdata, - .platdata_auto_alloc_size = sizeof(struct altera_sdram_platdata), - .probe = altera_sdram_probe, - .priv_auto_alloc_size = sizeof(struct altera_sdram_priv), -}; |