--- /dev/null
+/*
+ * Copyright (C) 2014 Freescale Semiconductor
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <errno.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/arch-fsl-lsch3/immap_lsch3.h>
+
+#include <fsl_debug_server.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+static int debug_server_ver_info_maj, debug_server_ver_info_min;
+
+/**
+ * Copying Debug Server firmware to DDR
+ */
+static int debug_server_copy_image(const char *title, u64 image_addr,
+ u32 image_size, u64 debug_server_ram_addr)
+{
+ debug("%s copied to address %p\n", title,
+ (void *)debug_server_ram_addr);
+ memcpy((void *)debug_server_ram_addr, (void *)image_addr, image_size);
+
+ return 0;
+}
+
+/**
+ * Debug Server FIT image parser checks if the image is in FIT
+ * format, verifies integrity of the image and calculates
+ * raw image address and size values.
+ *
+ * Returns 0 if success and -1 if any of the above mentioned
+ * task fail.
+ **/
+int debug_server_parse_firmware_fit_image(const void **raw_image_addr,
+ size_t *raw_image_size)
+{
+ int format;
+ void *fit_hdr;
+ int node_offset;
+ const void *data;
+ size_t size;
+ const char *uname = "firmware";
+ char *desc;
+ char *debug_server_ver_info;
+ char *debug_server_ver_info_major, *debug_server_ver_info_minor;
+
+ /* Check if the image is in NOR flash */
+#ifdef CONFIG_SYS_DEBUG_SERVER_FW_IN_NOR
+ fit_hdr = (void *)CONFIG_SYS_DEBUG_SERVER_FW_ADDR;
+#else
+#error "CONFIG_SYS_DEBUG_SERVER_FW_IN_NOR not defined"
+#endif
+
+ /* Check if Image is in FIT format */
+ format = genimg_get_format(fit_hdr);
+ if (format != IMAGE_FORMAT_FIT) {
+ printf("Error! Not a FIT image\n");
+ goto out_error;
+ }
+
+ if (!fit_check_format(fit_hdr)) {
+ printf("Error! Bad FIT image format\n");
+ goto out_error;
+ }
+
+ node_offset = fit_image_get_node(fit_hdr, uname);
+ if (node_offset < 0) {
+ printf("Error! Can not find %s subimage\n", uname);
+ goto out_error;
+ }
+
+ /* Verify Debug Server firmware image */
+ if (!fit_image_verify(fit_hdr, node_offset)) {
+ printf("Error! Bad Debug Server firmware hash");
+ goto out_error;
+ }
+
+ if (fit_get_desc(fit_hdr, node_offset, &desc) < 0) {
+ printf("Error! Failed to get Debug Server fw description");
+ goto out_error;
+ }
+
+ debug_server_ver_info = strstr(desc, "Version");
+ debug_server_ver_info_major = strtok(debug_server_ver_info, ".");
+ debug_server_ver_info_minor = strtok(NULL, ".");
+
+ debug_server_ver_info_maj =
+ simple_strtoul(debug_server_ver_info_major, NULL, 10);
+ debug_server_ver_info_min =
+ simple_strtoul(debug_server_ver_info_minor, NULL, 10);
+
+ /* Debug server version checking */
+ if ((debug_server_ver_info_maj < DEBUG_SERVER_VER_MAJOR) ||
+ (debug_server_ver_info_min < DEBUG_SERVER_VER_MINOR)) {
+ printf("Debug server FW mismatches the min version required\n");
+ printf("Expected:%d.%d, Got %d.%d\n",
+ DEBUG_SERVER_VER_MAJOR, DEBUG_SERVER_VER_MINOR,
+ debug_server_ver_info_maj,
+ debug_server_ver_info_min);
+ goto out_error;
+ }
+
+ /* Get address and size of raw image */
+ fit_image_get_data(fit_hdr, node_offset, &data, &size);
+
+ *raw_image_addr = data;
+ *raw_image_size = size;
+
+ return 0;
+
+out_error:
+ return -1;
+}
+
+/**
+ * Return the actual size of the Debug Server private DRAM block.
+ *
+ * NOTE: For now this function always returns the minimum required size,
+ * However, in the future, the actual size may be obtained from an environment
+ * variable.
+ */
+unsigned long debug_server_get_dram_block_size(void)
+{
+ return CONFIG_SYS_DEBUG_SERVER_DRAM_BLOCK_MIN_SIZE;
+}
+
+int debug_server_init(void)
+{
+ struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
+ int error, timeout = CONFIG_SYS_DEBUG_SERVER_TIMEOUT;
+ int debug_server_boot_status;
+ u64 debug_server_ram_addr, debug_server_ram_size;
+ const void *raw_image_addr;
+ size_t raw_image_size = 0;
+
+ debug("debug_server_init called\n");
+ /*
+ * The Debug Server private DRAM block was already carved at the end of
+ * DRAM by board_init_f() using CONFIG_SYS_MEM_TOP_HIDE:
+ */
+ debug_server_ram_size = debug_server_get_dram_block_size();
+ if (gd->bd->bi_dram[1].start)
+ debug_server_ram_addr =
+ gd->bd->bi_dram[1].start + gd->bd->bi_dram[1].size;
+ else
+ debug_server_ram_addr =
+ gd->bd->bi_dram[0].start + gd->bd->bi_dram[0].size;
+
+ error = debug_server_parse_firmware_fit_image(&raw_image_addr,
+ &raw_image_size);
+ if (error != 0)
+ goto out;
+
+ debug("debug server (ram addr = 0x%llx, ram size = 0x%llx)\n",
+ debug_server_ram_addr, debug_server_ram_size);
+ /*
+ * Load the Debug Server FW at the beginning of the Debug Server
+ * private DRAM block:
+ */
+ debug_server_copy_image("Debug Server Firmware",
+ (u64)raw_image_addr, raw_image_size,
+ debug_server_ram_addr);
+
+ /* flush dcache */
+ flush_dcache_range((unsigned long)debug_server_ram_addr,
+ (unsigned long)debug_server_ram_addr +
+ (unsigned long)debug_server_ram_size);
+
+ /*
+ * Tell SP that the Debug Server FW is about to be launched. Before that
+ * populate the following:
+ * 1. Write the size allocated to SP Memory region into Bits {31:16} of
+ * SCRATCHRW5.
+ * 2. Write the start address of the SP memory regions into
+ * SCRATCHRW5 (Bits {15:0}, contain most significant bits, Bits
+ * {47:32} of the SP Memory Region physical start address
+ * (SoC address)) and SCRATCHRW6 (Bits {31:0}).
+ * 3. To know the Debug Server FW boot status, set bit 0 of SCRATCHRW11
+ * to 1. The Debug Server sets this to 0 to indicate a
+ * successul boot.
+ * 4. Wakeup SP by writing 0x1F to VSG GIC reg VIGR2.
+ */
+
+ /* 512 MB */
+ out_le32(&gur->scratchrw[5 - 1],
+ (u32)((u64)debug_server_ram_addr >> 32) | (0x000D << 16));
+ out_le32(&gur->scratchrw[6 - 1],
+ ((u32)debug_server_ram_addr) & 0xFFFFFFFF);
+
+ out_le32(&gur->scratchrw[11 - 1], DEBUG_SERVER_INIT_STATUS);
+ /* Allow the changes to reflect in GUR block */
+ mb();
+
+ /*
+ * Program VGIC to raise an interrupt to SP
+ */
+ out_le32(CONFIG_SYS_FSL_SP_VSG_GIC_VIGR2, 0x1F);
+ /* Allow the changes to reflect in VIGR2 */
+ mb();
+
+ dmb();
+ debug("Polling for Debug server to launch ...\n");
+
+ while (1) {
+ debug_server_boot_status = in_le32(&gur->scratchrw[11 - 1]);
+ if (!(debug_server_boot_status & DEBUG_SERVER_INIT_STATUS_MASK))
+ break;
+
+ udelay(1); /* throttle polling */
+ if (timeout-- <= 0)
+ break;
+ }
+
+ if (timeout <= 0) {
+ printf("Debug Server FW timed out (boot status: 0x%x)\n",
+ debug_server_boot_status);
+ error = -ETIMEDOUT;
+ goto out;
+ }
+
+ if (debug_server_boot_status & DEBUG_SERVER_INIT_STATUS_MASK) {
+ printf("Debug server FW error'ed out (boot status: 0x%x)\n",
+ debug_server_boot_status);
+ error = -ENODEV;
+ goto out;
+ }
+
+ printf("Debug server booted\n");
+ printf("Detected firmware %d.%d, (boot status: 0x0%x)\n",
+ debug_server_ver_info_maj, debug_server_ver_info_min,
+ debug_server_boot_status);
+
+out:
+ if (error != 0)
+ debug_server_boot_status = -error;
+ else
+ debug_server_boot_status = 0;
+
+ return debug_server_boot_status;
+}
+
#define CONFIG_ARM_ERRATA_828024
#define CONFIG_ARM_ERRATA_826974
+/* We need architecture specific misc initializations */
+#define CONFIG_ARCH_MISC_INIT
+
/* Link Definitions */
#define CONFIG_SYS_TEXT_BASE 0x30001000
#define CONFIG_SYS_CS0_FTIM2 CONFIG_SYS_NOR_FTIM2
#define CONFIG_SYS_CS0_FTIM3 CONFIG_SYS_NOR_FTIM3
+/* Debug Server firmware */
+#define CONFIG_FSL_DEBUG_SERVER
+#define CONFIG_SYS_DEBUG_SERVER_DRAM_BLOCK_MIN_SIZE (512UL * 1024 * 1024)
+#define CONFIG_SYS_DEBUG_SERVER_FW_IN_NOR
+#define CONFIG_SYS_DEBUG_SERVER_FW_ADDR 0x580C00000ULL
+/* 2 sec timeout */
+#define CONFIG_SYS_DEBUG_SERVER_TIMEOUT (2 * 1000 * 1000)
+
/* MC firmware */
#define CONFIG_FSL_MC_ENET
#define CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE (512UL * 1024 * 1024)
#define CONFIG_SYS_LS_MC_DPL_MAX_LENGTH (256 * 1024)
#define CONFIG_SYS_LS_MC_DRAM_DPL_OFFSET 0xe00000
-/* Carve the MC private DRAM block from the end of DRAM */
-#ifdef CONFIG_FSL_MC_ENET
-#define CONFIG_SYS_MEM_TOP_HIDE mc_get_dram_block_size()
+/* Carve out a DDR region which will not be used by u-boot/Linux */
+#if defined(CONFIG_FSL_MC_ENET) || defined(CONFIG_FSL_DEBUG_SERVER)
+#define CONFIG_SYS_MEM_TOP_HIDE get_dram_size_to_hide()
#endif
/* Command line configuration */
#define CONFIG_SYS_CLK_FREQ 100000000
#define CONFIG_DDR_CLK_FREQ 133333333
-
#define CONFIG_NR_DRAM_BANKS 3
#define CONFIG_HWCONFIG
#define CONFIG_SYS_MAXARGS 64 /* max command args */
#ifndef __ASSEMBLY__
-unsigned long mc_get_dram_block_size(void);
+unsigned long get_dram_size_to_hide(void);
#endif
#endif /* __LS2_COMMON_H */
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