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-rw-r--r--arch/arm/mach-imx/imx8ulp/soc.c545
1 files changed, 545 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/imx8ulp/soc.c b/arch/arm/mach-imx/imx8ulp/soc.c
new file mode 100644
index 0000000000..1c33acc7dd
--- /dev/null
+++ b/arch/arm/mach-imx/imx8ulp/soc.c
@@ -0,0 +1,545 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2021 NXP
+ */
+
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/armv8/mmu.h>
+#include <asm/mach-imx/boot_mode.h>
+#include <asm/global_data.h>
+#include <efi_loader.h>
+#include <spl.h>
+#include <asm/arch/rdc.h>
+#include <asm/arch/s400_api.h>
+#include <asm/arch/mu_hal.h>
+#include <cpu_func.h>
+#include <asm/setup.h>
+#include <dm.h>
+#include <dm/device-internal.h>
+#include <dm/lists.h>
+#include <dm/uclass.h>
+#include <dm/device.h>
+#include <dm/uclass-internal.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct rom_api *g_rom_api = (struct rom_api *)0x1980;
+
+enum boot_device get_boot_device(void)
+{
+ volatile gd_t *pgd = gd;
+ int ret;
+ u32 boot;
+ u16 boot_type;
+ u8 boot_instance;
+ enum boot_device boot_dev = SD1_BOOT;
+
+ ret = g_rom_api->query_boot_infor(QUERY_BT_DEV, &boot,
+ ((uintptr_t)&boot) ^ QUERY_BT_DEV);
+ set_gd(pgd);
+
+ if (ret != ROM_API_OKAY) {
+ puts("ROMAPI: failure at query_boot_info\n");
+ return -1;
+ }
+
+ boot_type = boot >> 16;
+ boot_instance = (boot >> 8) & 0xff;
+
+ switch (boot_type) {
+ case BT_DEV_TYPE_SD:
+ boot_dev = boot_instance + SD1_BOOT;
+ break;
+ case BT_DEV_TYPE_MMC:
+ boot_dev = boot_instance + MMC1_BOOT;
+ break;
+ case BT_DEV_TYPE_NAND:
+ boot_dev = NAND_BOOT;
+ break;
+ case BT_DEV_TYPE_FLEXSPINOR:
+ boot_dev = QSPI_BOOT;
+ break;
+ case BT_DEV_TYPE_USB:
+ boot_dev = USB_BOOT;
+ break;
+ default:
+ break;
+ }
+
+ return boot_dev;
+}
+
+bool is_usb_boot(void)
+{
+ return get_boot_device() == USB_BOOT;
+}
+
+#ifdef CONFIG_ENV_IS_IN_MMC
+__weak int board_mmc_get_env_dev(int devno)
+{
+ return devno;
+}
+
+int mmc_get_env_dev(void)
+{
+ volatile gd_t *pgd = gd;
+ int ret;
+ u32 boot;
+ u16 boot_type;
+ u8 boot_instance;
+
+ ret = g_rom_api->query_boot_infor(QUERY_BT_DEV, &boot,
+ ((uintptr_t)&boot) ^ QUERY_BT_DEV);
+ set_gd(pgd);
+
+ if (ret != ROM_API_OKAY) {
+ puts("ROMAPI: failure at query_boot_info\n");
+ return CONFIG_SYS_MMC_ENV_DEV;
+ }
+
+ boot_type = boot >> 16;
+ boot_instance = (boot >> 8) & 0xff;
+
+ /* If not boot from sd/mmc, use default value */
+ if (boot_type != BOOT_TYPE_SD && boot_type != BOOT_TYPE_MMC)
+ return env_get_ulong("mmcdev", 10, CONFIG_SYS_MMC_ENV_DEV);
+
+ return board_mmc_get_env_dev(boot_instance);
+}
+#endif
+
+u32 get_cpu_rev(void)
+{
+ return (MXC_CPU_IMX8ULP << 12) | CHIP_REV_1_0;
+}
+
+enum bt_mode get_boot_mode(void)
+{
+ u32 bt0_cfg = 0;
+
+ bt0_cfg = readl(SIM_SEC_BASE_ADDR + 0x24);
+ bt0_cfg &= (BT0CFG_LPBOOT_MASK | BT0CFG_DUALBOOT_MASK);
+
+ if (!(bt0_cfg & BT0CFG_LPBOOT_MASK)) {
+ /* No low power boot */
+ if (bt0_cfg & BT0CFG_DUALBOOT_MASK)
+ return DUAL_BOOT;
+ else
+ return SINGLE_BOOT;
+ }
+
+ return LOW_POWER_BOOT;
+}
+
+#define CMC_SRS_TAMPER BIT(31)
+#define CMC_SRS_SECURITY BIT(30)
+#define CMC_SRS_TZWDG BIT(29)
+#define CMC_SRS_JTAG_RST BIT(28)
+#define CMC_SRS_CORE1 BIT(16)
+#define CMC_SRS_LOCKUP BIT(15)
+#define CMC_SRS_SW BIT(14)
+#define CMC_SRS_WDG BIT(13)
+#define CMC_SRS_PIN_RESET BIT(8)
+#define CMC_SRS_WARM BIT(4)
+#define CMC_SRS_HVD BIT(3)
+#define CMC_SRS_LVD BIT(2)
+#define CMC_SRS_POR BIT(1)
+#define CMC_SRS_WUP BIT(0)
+
+static char *get_reset_cause(char *ret)
+{
+ u32 cause1, cause = 0, srs = 0;
+ void __iomem *reg_ssrs = (void __iomem *)(CMC1_BASE_ADDR + 0x88);
+ void __iomem *reg_srs = (void __iomem *)(CMC1_BASE_ADDR + 0x80);
+
+ if (!ret)
+ return "null";
+
+ srs = readl(reg_srs);
+ cause1 = readl(reg_ssrs);
+
+ cause = srs & (CMC_SRS_POR | CMC_SRS_WUP | CMC_SRS_WARM);
+
+ switch (cause) {
+ case CMC_SRS_POR:
+ sprintf(ret, "%s", "POR");
+ break;
+ case CMC_SRS_WUP:
+ sprintf(ret, "%s", "WUP");
+ break;
+ case CMC_SRS_WARM:
+ cause = srs & (CMC_SRS_WDG | CMC_SRS_SW |
+ CMC_SRS_JTAG_RST);
+ switch (cause) {
+ case CMC_SRS_WDG:
+ sprintf(ret, "%s", "WARM-WDG");
+ break;
+ case CMC_SRS_SW:
+ sprintf(ret, "%s", "WARM-SW");
+ break;
+ case CMC_SRS_JTAG_RST:
+ sprintf(ret, "%s", "WARM-JTAG");
+ break;
+ default:
+ sprintf(ret, "%s", "WARM-UNKN");
+ break;
+ }
+ break;
+ default:
+ sprintf(ret, "%s-%X", "UNKN", srs);
+ break;
+ }
+
+ debug("[%X] SRS[%X] %X - ", cause1, srs, srs ^ cause1);
+ return ret;
+}
+
+#if defined(CONFIG_DISPLAY_CPUINFO)
+const char *get_imx_type(u32 imxtype)
+{
+ return "8ULP";
+}
+
+int print_cpuinfo(void)
+{
+ u32 cpurev;
+ char cause[18];
+
+ cpurev = get_cpu_rev();
+
+ printf("CPU: Freescale i.MX%s rev%d.%d at %d MHz\n",
+ get_imx_type((cpurev & 0xFF000) >> 12),
+ (cpurev & 0x000F0) >> 4, (cpurev & 0x0000F) >> 0,
+ mxc_get_clock(MXC_ARM_CLK) / 1000000);
+
+ printf("Reset cause: %s\n", get_reset_cause(cause));
+
+ printf("Boot mode: ");
+ switch (get_boot_mode()) {
+ case LOW_POWER_BOOT:
+ printf("Low power boot\n");
+ break;
+ case DUAL_BOOT:
+ printf("Dual boot\n");
+ break;
+ case SINGLE_BOOT:
+ default:
+ printf("Single boot\n");
+ break;
+ }
+
+ return 0;
+}
+#endif
+
+#define UNLOCK_WORD0 0xC520 /* 1st unlock word */
+#define UNLOCK_WORD1 0xD928 /* 2nd unlock word */
+#define REFRESH_WORD0 0xA602 /* 1st refresh word */
+#define REFRESH_WORD1 0xB480 /* 2nd refresh word */
+
+static void disable_wdog(void __iomem *wdog_base)
+{
+ u32 val_cs = readl(wdog_base + 0x00);
+
+ if (!(val_cs & 0x80))
+ return;
+
+ dmb();
+ __raw_writel(REFRESH_WORD0, (wdog_base + 0x04)); /* Refresh the CNT */
+ __raw_writel(REFRESH_WORD1, (wdog_base + 0x04));
+ dmb();
+
+ if (!(val_cs & 800)) {
+ dmb();
+ __raw_writel(UNLOCK_WORD0, (wdog_base + 0x04));
+ __raw_writel(UNLOCK_WORD1, (wdog_base + 0x04));
+ dmb();
+
+ while (!(readl(wdog_base + 0x00) & 0x800))
+ ;
+ }
+ writel(0x0, (wdog_base + 0x0C)); /* Set WIN to 0 */
+ writel(0x400, (wdog_base + 0x08)); /* Set timeout to default 0x400 */
+ writel(0x120, (wdog_base + 0x00)); /* Disable it and set update */
+
+ while (!(readl(wdog_base + 0x00) & 0x400))
+ ;
+}
+
+void init_wdog(void)
+{
+ disable_wdog((void __iomem *)WDG3_RBASE);
+}
+
+static struct mm_region imx8ulp_arm64_mem_map[] = {
+ {
+ /* ROM */
+ .virt = 0x0,
+ .phys = 0x0,
+ .size = 0x40000UL,
+ .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+ PTE_BLOCK_OUTER_SHARE
+ },
+ {
+ /* FLEXSPI0 */
+ .virt = 0x04000000,
+ .phys = 0x04000000,
+ .size = 0x08000000UL,
+ .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+ PTE_BLOCK_NON_SHARE |
+ PTE_BLOCK_PXN | PTE_BLOCK_UXN
+ },
+ {
+ /* SSRAM (align with 2M) */
+ .virt = 0x1FE00000UL,
+ .phys = 0x1FE00000UL,
+ .size = 0x400000UL,
+ .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+ PTE_BLOCK_OUTER_SHARE |
+ PTE_BLOCK_PXN | PTE_BLOCK_UXN
+ }, {
+ /* SRAM1 (align with 2M) */
+ .virt = 0x21000000UL,
+ .phys = 0x21000000UL,
+ .size = 0x200000UL,
+ .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+ PTE_BLOCK_OUTER_SHARE |
+ PTE_BLOCK_PXN | PTE_BLOCK_UXN
+ }, {
+ /* SRAM0 (align with 2M) */
+ .virt = 0x22000000UL,
+ .phys = 0x22000000UL,
+ .size = 0x200000UL,
+ .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+ PTE_BLOCK_OUTER_SHARE |
+ PTE_BLOCK_PXN | PTE_BLOCK_UXN
+ }, {
+ /* Peripherals */
+ .virt = 0x27000000UL,
+ .phys = 0x27000000UL,
+ .size = 0x3000000UL,
+ .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+ PTE_BLOCK_NON_SHARE |
+ PTE_BLOCK_PXN | PTE_BLOCK_UXN
+ }, {
+ /* Peripherals */
+ .virt = 0x2D000000UL,
+ .phys = 0x2D000000UL,
+ .size = 0x1600000UL,
+ .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+ PTE_BLOCK_NON_SHARE |
+ PTE_BLOCK_PXN | PTE_BLOCK_UXN
+ }, {
+ /* FLEXSPI1-2 */
+ .virt = 0x40000000UL,
+ .phys = 0x40000000UL,
+ .size = 0x40000000UL,
+ .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+ PTE_BLOCK_NON_SHARE |
+ PTE_BLOCK_PXN | PTE_BLOCK_UXN
+ }, {
+ /* DRAM1 */
+ .virt = 0x80000000UL,
+ .phys = 0x80000000UL,
+ .size = PHYS_SDRAM_SIZE,
+ .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+ PTE_BLOCK_OUTER_SHARE
+ }, {
+ /*
+ * empty entrie to split table entry 5
+ * if needed when TEEs are used
+ */
+ 0,
+ }, {
+ /* List terminator */
+ 0,
+ }
+};
+
+struct mm_region *mem_map = imx8ulp_arm64_mem_map;
+
+/* simplify the page table size to enhance boot speed */
+#define MAX_PTE_ENTRIES 512
+#define MAX_MEM_MAP_REGIONS 16
+u64 get_page_table_size(void)
+{
+ u64 one_pt = MAX_PTE_ENTRIES * sizeof(u64);
+ u64 size = 0;
+
+ /*
+ * For each memory region, the max table size:
+ * 2 level 3 tables + 2 level 2 tables + 1 level 1 table
+ */
+ size = (2 + 2 + 1) * one_pt * MAX_MEM_MAP_REGIONS + one_pt;
+
+ /*
+ * We need to duplicate our page table once to have an emergency pt to
+ * resort to when splitting page tables later on
+ */
+ size *= 2;
+
+ /*
+ * We may need to split page tables later on if dcache settings change,
+ * so reserve up to 4 (random pick) page tables for that.
+ */
+ size += one_pt * 4;
+
+ return size;
+}
+
+void enable_caches(void)
+{
+ /* TODO: add TEE memmap region */
+
+ icache_enable();
+ dcache_enable();
+}
+
+int dram_init(void)
+{
+ gd->ram_size = PHYS_SDRAM_SIZE;
+
+ return 0;
+}
+
+#ifdef CONFIG_SERIAL_TAG
+void get_board_serial(struct tag_serialnr *serialnr)
+{
+ u32 uid[4];
+ u32 res;
+ int ret;
+
+ ret = ahab_read_common_fuse(1, uid, 4, &res);
+ if (ret)
+ printf("ahab read fuse failed %d, 0x%x\n", ret, res);
+ else
+ printf("UID 0x%x,0x%x,0x%x,0x%x\n", uid[0], uid[1], uid[2], uid[3]);
+
+ serialnr->low = uid[0];
+ serialnr->high = uid[3];
+}
+#endif
+
+static void set_core0_reset_vector(u32 entry)
+{
+ /* Update SIM1 DGO8 for reset vector base */
+ writel(entry, SIM1_BASE_ADDR + 0x5c);
+
+ /* set update bit */
+ setbits_le32(SIM1_BASE_ADDR + 0x8, 0x1 << 24);
+
+ /* polling the ack */
+ while ((readl(SIM1_BASE_ADDR + 0x8) & (0x1 << 26)) == 0)
+ ;
+
+ /* clear the update */
+ clrbits_le32(SIM1_BASE_ADDR + 0x8, (0x1 << 24));
+
+ /* clear the ack by set 1 */
+ setbits_le32(SIM1_BASE_ADDR + 0x8, (0x1 << 26));
+}
+
+static int trdc_set_access(void)
+{
+ /*
+ * TRDC mgr + 4 MBC + 2 MRC.
+ * S400 should already configure when release RDC
+ * A35 only map non-secure region for pbridge0 and 1, set sec_access to false
+ */
+ trdc_mbc_set_access(2, 7, 0, 49, false);
+ trdc_mbc_set_access(2, 7, 0, 50, false);
+ trdc_mbc_set_access(2, 7, 0, 51, false);
+ trdc_mbc_set_access(2, 7, 0, 52, false);
+ trdc_mbc_set_access(2, 7, 0, 53, false);
+ trdc_mbc_set_access(2, 7, 0, 54, false);
+
+ /* CGC0: PBridge0 slot 47 */
+ trdc_mbc_set_access(2, 7, 0, 47, false);
+
+ /* Iomuxc0: : PBridge1 slot 33 */
+ trdc_mbc_set_access(2, 7, 1, 33, false);
+
+ return 0;
+}
+
+int arch_cpu_init(void)
+{
+ if (IS_ENABLED(CONFIG_SPL_BUILD)) {
+ /* Disable wdog */
+ init_wdog();
+
+ if (get_boot_mode() == SINGLE_BOOT) {
+ release_rdc(RDC_TRDC);
+ trdc_set_access();
+ /* LPAV to APD */
+ setbits_le32(0x2802B044, BIT(7));
+ /* GPU 2D/3D to APD */
+ setbits_le32(0x2802B04C, BIT(1) | BIT(2));
+ /* DCNANO and MIPI_DSI to APD */
+ setbits_le32(0x2802B04C, BIT(1) | BIT(2) | BIT(3) | BIT(4));
+ }
+
+ /* release xrdc, then allow A35 to write SRAM2 */
+ release_rdc(RDC_XRDC);
+ xrdc_mrc_region_set_access(2, CONFIG_SPL_TEXT_BASE, 0xE00);
+
+ clock_init();
+ } else {
+ /* reconfigure core0 reset vector to ROM */
+ set_core0_reset_vector(0x1000);
+ }
+
+ return 0;
+}
+
+int arch_cpu_init_dm(void)
+{
+ struct udevice *devp;
+ int node, ret;
+
+ node = fdt_node_offset_by_compatible(gd->fdt_blob, -1, "fsl,imx8ulp-mu");
+
+ ret = uclass_get_device_by_of_offset(UCLASS_MISC, node, &devp);
+ if (ret) {
+ printf("could not get S400 mu %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+#if defined(CONFIG_SPL_BUILD)
+__weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
+{
+ debug("image entry point: 0x%lx\n", spl_image->entry_point);
+
+ set_core0_reset_vector((u32)spl_image->entry_point);
+
+ /* Enable the 512KB cache */
+ setbits_le32(SIM1_BASE_ADDR + 0x30, (0x1 << 4));
+
+ /* reset core */
+ setbits_le32(SIM1_BASE_ADDR + 0x30, (0x1 << 16));
+
+ while (1)
+ ;
+}
+#endif
+
+void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
+{
+ memset(mac, 0, 6);
+}
+
+int (*card_emmc_is_boot_part_en)(void) = (void *)0x67cc;
+u32 spl_arch_boot_image_offset(u32 image_offset, u32 rom_bt_dev)
+{
+ /* Hard code for eMMC image_offset on 8ULP ROM, need fix by ROM, temp workaround */
+ if (((rom_bt_dev >> 16) & 0xff) == BT_DEV_TYPE_MMC && card_emmc_is_boot_part_en())
+ image_offset = 0;
+
+ return image_offset;
+}
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