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arm64: zynqmp: Setup MMU map for DDR at run time
[u-boot] / board / xilinx / zynqmp / zynqmp.c
index d17868b0c2b7cec23997f89982008d6a208fb3cc..911cd52e0c40c51f8820bccff1ffcdc1b70755e3 100644 (file)
@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2014 - 2015 Xilinx, Inc.
  * Michal Simek <michal.simek@xilinx.com>
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <common.h>
 #include <ahci.h>
 #include <scsi.h>
 #include <malloc.h>
+#include <wdt.h>
 #include <asm/arch/clk.h>
 #include <asm/arch/hardware.h>
 #include <asm/arch/sys_proto.h>
+#include <asm/arch/psu_init_gpl.h>
 #include <asm/io.h>
+#include <dm/uclass.h>
 #include <usb.h>
 #include <dwc3-uboot.h>
 #include <zynqmppl.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
+#if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_WDT)
+static struct udevice *watchdog_dev;
+#endif
+
 #if defined(CONFIG_FPGA) && defined(CONFIG_FPGA_ZYNQMPPL) && \
     !defined(CONFIG_SPL_BUILD)
 static xilinx_desc zynqmppl = XILINX_ZYNQMP_DESC;
 
 static const struct {
-       uint32_t id;
+       u32 id;
+       u32 ver;
        char *name;
+       bool evexists;
 } zynqmp_devices[] = {
        {
                .id = 0x10,
                .name = "3eg",
        },
+       {
+               .id = 0x10,
+               .ver = 0x2c,
+               .name = "3cg",
+       },
        {
                .id = 0x11,
                .name = "2eg",
        },
+       {
+               .id = 0x11,
+               .ver = 0x2c,
+               .name = "2cg",
+       },
        {
                .id = 0x20,
                .name = "5ev",
+               .evexists = 1,
+       },
+       {
+               .id = 0x20,
+               .ver = 0x100,
+               .name = "5eg",
+               .evexists = 1,
+       },
+       {
+               .id = 0x20,
+               .ver = 0x12c,
+               .name = "5cg",
        },
        {
                .id = 0x21,
                .name = "4ev",
+               .evexists = 1,
+       },
+       {
+               .id = 0x21,
+               .ver = 0x100,
+               .name = "4eg",
+               .evexists = 1,
+       },
+       {
+               .id = 0x21,
+               .ver = 0x12c,
+               .name = "4cg",
        },
        {
                .id = 0x30,
                .name = "7ev",
+               .evexists = 1,
+       },
+       {
+               .id = 0x30,
+               .ver = 0x100,
+               .name = "7eg",
+               .evexists = 1,
+       },
+       {
+               .id = 0x30,
+               .ver = 0x12c,
+               .name = "7cg",
        },
        {
                .id = 0x38,
                .name = "9eg",
        },
+       {
+               .id = 0x38,
+               .ver = 0x2c,
+               .name = "9cg",
+       },
        {
                .id = 0x39,
                .name = "6eg",
        },
+       {
+               .id = 0x39,
+               .ver = 0x2c,
+               .name = "6cg",
+       },
        {
                .id = 0x40,
                .name = "11eg",
        },
+       { /* For testing purpose only */
+               .id = 0x50,
+               .ver = 0x2c,
+               .name = "15cg",
+       },
        {
                .id = 0x50,
                .name = "15eg",
@@ -74,6 +143,30 @@ static const struct {
                .id = 0x59,
                .name = "17eg",
        },
+       {
+               .id = 0x61,
+               .name = "21dr",
+       },
+       {
+               .id = 0x63,
+               .name = "23dr",
+       },
+       {
+               .id = 0x65,
+               .name = "25dr",
+       },
+       {
+               .id = 0x64,
+               .name = "27dr",
+       },
+       {
+               .id = 0x60,
+               .name = "28dr",
+       },
+       {
+               .id = 0x62,
+               .name = "29dr",
+       },
 };
 #endif
 
@@ -95,6 +188,7 @@ int chip_id(unsigned char id)
                 * regs[0][31:0]  = status of the operation
                 * regs[0][63:32] = CSU.IDCODE register
                 * regs[1][31:0]  = CSU.version register
+                * regs[1][63:32] = CSU.IDCODE2 register
                 */
                switch (id) {
                case IDCODE:
@@ -109,6 +203,11 @@ int chip_id(unsigned char id)
                        regs.regs[1] &= ZYNQMP_CSU_SILICON_VER_MASK;
                        val = regs.regs[1];
                        break;
+               case IDCODE2:
+                       regs.regs[1] = lower_32_bits(regs.regs[1]);
+                       regs.regs[1] >>= ZYNQMP_CSU_VERSION_EMPTY_SHIFT;
+                       val = regs.regs[1];
+                       break;
                default:
                        printf("%s, Invalid Req:0x%x\n", __func__, id);
                }
@@ -132,35 +231,69 @@ int chip_id(unsigned char id)
        return val;
 }
 
+#define ZYNQMP_VERSION_SIZE            9
+#define ZYNQMP_PL_STATUS_BIT           9
+#define ZYNQMP_PL_STATUS_MASK          BIT(ZYNQMP_PL_STATUS_BIT)
+#define ZYNQMP_CSU_VERSION_MASK                ~(ZYNQMP_PL_STATUS_MASK)
+
 #if defined(CONFIG_FPGA) && defined(CONFIG_FPGA_ZYNQMPPL) && \
        !defined(CONFIG_SPL_BUILD)
 static char *zynqmp_get_silicon_idcode_name(void)
 {
-       uint32_t i, id;
+       u32 i, id, ver;
+       char *buf;
+       static char name[ZYNQMP_VERSION_SIZE];
 
        id = chip_id(IDCODE);
+       ver = chip_id(IDCODE2);
+
        for (i = 0; i < ARRAY_SIZE(zynqmp_devices); i++) {
-               if (zynqmp_devices[i].id == id)
-                       return zynqmp_devices[i].name;
+               if ((zynqmp_devices[i].id == id) &&
+                   (zynqmp_devices[i].ver == (ver &
+                   ZYNQMP_CSU_VERSION_MASK))) {
+                       strncat(name, "zu", 2);
+                       strncat(name, zynqmp_devices[i].name,
+                               ZYNQMP_VERSION_SIZE - 3);
+                       break;
+               }
        }
-       return "unknown";
+
+       if (i >= ARRAY_SIZE(zynqmp_devices))
+               return "unknown";
+
+       if (!zynqmp_devices[i].evexists)
+               return name;
+
+       if (ver & ZYNQMP_PL_STATUS_MASK)
+               return name;
+
+       if (strstr(name, "eg") || strstr(name, "ev")) {
+               buf = strstr(name, "e");
+               *buf = '\0';
+       }
+
+       return name;
 }
 #endif
 
 int board_early_init_f(void)
 {
+       int ret = 0;
 #if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_CLK_ZYNQMP)
        zynqmp_pmufw_version();
 #endif
 
-#if defined(CONFIG_SPL_BUILD) || defined(CONFIG_ZYNQMP_PSU_INIT_ENABLED)
-       psu_init();
+#if defined(CONFIG_ZYNQMP_PSU_INIT_ENABLED)
+       ret = psu_init();
 #endif
 
-       return 0;
-}
+#if defined(CONFIG_WDT) && !defined(CONFIG_SPL_BUILD)
+       /* bss is not cleared at time when watchdog_reset() is called */
+       watchdog_dev = NULL;
+#endif
 
-#define ZYNQMP_VERSION_SIZE    9
+       return ret;
+}
 
 int board_init(void)
 {
@@ -170,29 +303,58 @@ int board_init(void)
     !defined(CONFIG_SPL_BUILD) || (defined(CONFIG_SPL_FPGA_SUPPORT) && \
     defined(CONFIG_SPL_BUILD))
        if (current_el() != 3) {
-               static char version[ZYNQMP_VERSION_SIZE];
-
-               strncat(version, "xczu", 4);
-               zynqmppl.name = strncat(version,
-                                       zynqmp_get_silicon_idcode_name(),
-                                       ZYNQMP_VERSION_SIZE - 5);
+               zynqmppl.name = zynqmp_get_silicon_idcode_name();
                printf("Chip ID:\t%s\n", zynqmppl.name);
                fpga_init();
                fpga_add(fpga_xilinx, &zynqmppl);
        }
 #endif
 
+#if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_WDT)
+       if (uclass_get_device(UCLASS_WDT, 0, &watchdog_dev)) {
+               puts("Watchdog: Not found!\n");
+       } else {
+               wdt_start(watchdog_dev, 0, 0);
+               puts("Watchdog: Started\n");
+       }
+#endif
+
        return 0;
 }
 
+#ifdef CONFIG_WATCHDOG
+/* Called by macro WATCHDOG_RESET */
+void watchdog_reset(void)
+{
+# if !defined(CONFIG_SPL_BUILD)
+       static ulong next_reset;
+       ulong now;
+
+       if (!watchdog_dev)
+               return;
+
+       now = timer_get_us();
+
+       /* Do not reset the watchdog too often */
+       if (now > next_reset) {
+               wdt_reset(watchdog_dev);
+               next_reset = now + 1000;
+       }
+# endif
+}
+#endif
+
 int board_early_init_r(void)
 {
        u32 val;
 
+       if (current_el() != 3)
+               return 0;
+
        val = readl(&crlapb_base->timestamp_ref_ctrl);
        val &= ZYNQMP_CRL_APB_TIMESTAMP_REF_CTRL_CLKACT;
 
-       if (current_el() == 3 && !val) {
+       if (!val) {
                val = readl(&crlapb_base->timestamp_ref_ctrl);
                val |= ZYNQMP_CRL_APB_TIMESTAMP_REF_CTRL_CLKACT;
                writel(val, &crlapb_base->timestamp_ref_ctrl);
@@ -223,10 +385,33 @@ int zynq_board_read_rom_ethaddr(unsigned char *ethaddr)
        return 0;
 }
 
+unsigned long do_go_exec(ulong (*entry)(int, char * const []), int argc,
+                        char * const argv[])
+{
+       int ret = 0;
+
+       if (current_el() > 1) {
+               smp_kick_all_cpus();
+               dcache_disable();
+               armv8_switch_to_el1(0x0, 0, 0, 0, (unsigned long)entry,
+                                   ES_TO_AARCH64);
+       } else {
+               printf("FAIL: current EL is not above EL1\n");
+               ret = EINVAL;
+       }
+       return ret;
+}
+
 #if !defined(CONFIG_SYS_SDRAM_BASE) && !defined(CONFIG_SYS_SDRAM_SIZE)
 int dram_init_banksize(void)
 {
-       fdtdec_setup_memory_banksize();
+       int ret;
+
+       ret = fdtdec_setup_memory_banksize();
+       if (ret)
+               return ret;
+
+       mem_map_fill();
 
        return 0;
 }
@@ -239,9 +424,22 @@ int dram_init(void)
        return 0;
 }
 #else
+int dram_init_banksize(void)
+{
+#if defined(CONFIG_NR_DRAM_BANKS)
+       gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
+       gd->bd->bi_dram[0].size = get_effective_memsize();
+#endif
+
+       mem_map_fill();
+
+       return 0;
+}
+
 int dram_init(void)
 {
-       gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
+       gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
+                                   CONFIG_SYS_SDRAM_SIZE);
 
        return 0;
 }
@@ -257,13 +455,18 @@ int board_late_init(void)
        u8 bootmode;
        const char *mode;
        char *new_targets;
+       char *env_targets;
+       int ret;
 
        if (!(gd->flags & GD_FLG_ENV_DEFAULT)) {
                debug("Saved variables - Skipping\n");
                return 0;
        }
 
-       reg = readl(&crlapb_base->boot_mode);
+       ret = zynqmp_mmio_read((ulong)&crlapb_base->boot_mode, &reg);
+       if (ret)
+               return -EINVAL;
+
        if (reg >> BOOT_MODE_ALT_SHIFT)
                reg >>= BOOT_MODE_ALT_SHIFT;
 
@@ -274,23 +477,28 @@ int board_late_init(void)
        case USB_MODE:
                puts("USB_MODE\n");
                mode = "usb";
+               env_set("modeboot", "usb_dfu_spl");
                break;
        case JTAG_MODE:
                puts("JTAG_MODE\n");
                mode = "pxe dhcp";
+               env_set("modeboot", "jtagboot");
                break;
        case QSPI_MODE_24BIT:
        case QSPI_MODE_32BIT:
                mode = "qspi0";
                puts("QSPI_MODE\n");
+               env_set("modeboot", "qspiboot");
                break;
        case EMMC_MODE:
                puts("EMMC_MODE\n");
                mode = "mmc0";
+               env_set("modeboot", "emmcboot");
                break;
        case SD_MODE:
                puts("SD_MODE\n");
                mode = "mmc0";
+               env_set("modeboot", "sdboot");
                break;
        case SD1_LSHFT_MODE:
                puts("LVL_SHFT_");
@@ -299,13 +507,16 @@ int board_late_init(void)
                puts("SD_MODE1\n");
 #if defined(CONFIG_ZYNQ_SDHCI0) && defined(CONFIG_ZYNQ_SDHCI1)
                mode = "mmc1";
+               env_set("sdbootdev", "1");
 #else
                mode = "mmc0";
 #endif
+               env_set("modeboot", "sdboot");
                break;
        case NAND_MODE:
                puts("NAND_MODE\n");
                mode = "nand0";
+               env_set("modeboot", "nandboot");
                break;
        default:
                mode = "";
@@ -317,10 +528,16 @@ int board_late_init(void)
         * One terminating char + one byte for space between mode
         * and default boot_targets
         */
-       new_targets = calloc(1, strlen(mode) +
-                               strlen(env_get("boot_targets")) + 2);
+       env_targets = env_get("boot_targets");
+       if (env_targets) {
+               new_targets = calloc(1, strlen(mode) +
+                                    strlen(env_targets) + 2);
+               sprintf(new_targets, "%s %s", mode, env_targets);
+       } else {
+               new_targets = calloc(1, strlen(mode) + 2);
+               sprintf(new_targets, "%s", mode);
+       }
 
-       sprintf(new_targets, "%s %s", mode, env_get("boot_targets"));
        env_set("boot_targets", new_targets);
 
        return 0;