--- /dev/null
+/*
+ * Copyright (C) 2014 Freescale Semiconductor
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+#include <errno.h>
+#include <asm/io.h>
+#include <fsl_mc.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+static int mc_boot_status;
+
+/**
+ * Copying MC firmware or DPL image to DDR
+ */
+static int mc_copy_image(const char *title,
+ u64 image_addr, u32 image_size, u64 mc_ram_addr)
+{
+ debug("%s copied to address %p\n", title, (void *)mc_ram_addr);
+ memcpy((void *)mc_ram_addr, (void *)image_addr, image_size);
+ return 0;
+}
+
+/**
+ * MC firmware 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 parse_mc_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";
+
+ /* Check if the image is in NOR flash*/
+#ifdef CONFIG_SYS_LS_MC_FW_IN_NOR
+ fit_hdr = (void *)CONFIG_SYS_LS_MC_FW_ADDR;
+#else
+#error "No CONFIG_SYS_LS_MC_FW_IN_xxx defined"
+#endif
+
+ /* Check if Image is in FIT format */
+ format = genimg_get_format(fit_hdr);
+
+ if (format != IMAGE_FORMAT_FIT) {
+ debug("Not a FIT image\n");
+ return 1;
+ }
+
+ if (!fit_check_format(fit_hdr)) {
+ debug("Bad FIT image format\n");
+ return 1;
+ }
+
+ node_offset = fit_image_get_node(fit_hdr, uname);
+
+ if (node_offset < 0) {
+ debug("Can not find %s subimage\n", uname);
+ return 1;
+ }
+
+ /* Verify MC firmware image */
+ if (!(fit_image_verify(fit_hdr, node_offset))) {
+ debug("Bad MC firmware hash");
+ return 1;
+ }
+
+ /* 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;
+}
+
+int mc_init(bd_t *bis)
+{
+ int error = 0;
+ int timeout = 200000;
+ struct mc_ccsr_registers __iomem *mc_ccsr_regs = MC_CCSR_BASE_ADDR;
+ u64 mc_ram_addr;
+ u64 mc_dpl_offset;
+ u32 reg_gsr;
+ u32 mc_fw_boot_status;
+ void *fdt_hdr;
+ int dpl_size;
+ const void *raw_image_addr;
+ size_t raw_image_size = 0;
+
+ BUILD_BUG_ON(CONFIG_SYS_LS_MC_FW_LENGTH % 4 != 0);
+
+ /*
+ * The MC private DRAM block was already carved at the end of DRAM
+ * by board_init_f() using CONFIG_SYS_MEM_TOP_HIDE:
+ */
+ if (gd->bd->bi_dram[1].start) {
+ mc_ram_addr =
+ gd->bd->bi_dram[1].start + gd->bd->bi_dram[1].size;
+ } else {
+ mc_ram_addr =
+ gd->bd->bi_dram[0].start + gd->bd->bi_dram[0].size;
+ }
+
+ /*
+ * Management Complex cores should be held at reset out of POR.
+ * U-boot should be the first software to touch MC. To be safe,
+ * we reset all cores again by setting GCR1 to 0. It doesn't do
+ * anything if they are held at reset. After we setup the firmware
+ * we kick off MC by deasserting the reset bit for core 0, and
+ * deasserting the reset bits for Command Portal Managers.
+ * The stop bits are not touched here. They are used to stop the
+ * cores when they are active. Setting stop bits doesn't stop the
+ * cores from fetching instructions when they are released from
+ * reset.
+ */
+ out_le32(&mc_ccsr_regs->reg_gcr1, 0);
+ dmb();
+
+ error = parse_mc_firmware_fit_image(&raw_image_addr, &raw_image_size);
+ if (error != 0)
+ goto out;
+ /*
+ * Load the MC FW at the beginning of the MC private DRAM block:
+ */
+ mc_copy_image(
+ "MC Firmware",
+ (u64)raw_image_addr,
+ raw_image_size,
+ mc_ram_addr);
+
+ /*
+ * Calculate offset in the MC private DRAM block at which the MC DPL
+ * blob is to be placed:
+ */
+#ifdef CONFIG_SYS_LS_MC_DRAM_DPL_OFFSET
+ BUILD_BUG_ON(
+ (CONFIG_SYS_LS_MC_DRAM_DPL_OFFSET & 0x3) != 0 ||
+ CONFIG_SYS_LS_MC_DRAM_DPL_OFFSET > 0xffffffff);
+
+ mc_dpl_offset = CONFIG_SYS_LS_MC_DRAM_DPL_OFFSET;
+#else
+ mc_dpl_offset = mc_get_dram_block_size() -
+ roundup(CONFIG_SYS_LS_MC_DPL_LENGTH, 4096);
+
+ if ((mc_dpl_offset & 0x3) != 0 || mc_dpl_offset > 0xffffffff) {
+ printf("%s: Invalid MC DPL offset: %llu\n",
+ __func__, mc_dpl_offset);
+ error = -EINVAL;
+ goto out;
+ }
+#endif
+
+ /* Check if DPL image is in NOR flash */
+#ifdef CONFIG_SYS_LS_MC_DPL_IN_NOR
+ fdt_hdr = (void *)CONFIG_SYS_LS_MC_DPL_ADDR;
+#else
+#error "No CONFIG_SYS_LS_MC_DPL_IN_xxx defined"
+#endif
+
+ dpl_size = fdt_totalsize(fdt_hdr);
+
+ /*
+ * Load the MC DPL blob at the far end of the MC private DRAM block:
+ */
+ mc_copy_image(
+ "MC DPL blob",
+ (u64)fdt_hdr,
+ dpl_size,
+ mc_ram_addr + mc_dpl_offset);
+
+ debug("mc_ccsr_regs %p\n", mc_ccsr_regs);
+
+ /*
+ * Tell MC where the MC Firmware image was loaded in DDR:
+ */
+ out_le32(&mc_ccsr_regs->reg_mcfbalr, (u32)mc_ram_addr);
+ out_le32(&mc_ccsr_regs->reg_mcfbahr, (u32)((u64)mc_ram_addr >> 32));
+ out_le32(&mc_ccsr_regs->reg_mcfapr, MCFAPR_BYPASS_ICID_MASK);
+
+ /*
+ * Tell MC where the DPL blob was loaded in DDR, by indicating
+ * its offset relative to the beginning of the DDR block
+ * allocated to the MC firmware. The MC firmware is responsible
+ * for checking that there is no overlap between the DPL blob
+ * and the runtime heap and stack of the MC firmware itself.
+ *
+ * NOTE: bits [31:2] of this offset need to be stored in bits [29:0] of
+ * the GSR MC CCSR register. So, this offset is assumed to be 4-byte
+ * aligned.
+ * Care must be taken not to write 1s into bits 31 and 30 of the GSR in
+ * this case as the SoC COP or PIC will be signaled.
+ */
+ out_le32(&mc_ccsr_regs->reg_gsr, (u32)(mc_dpl_offset >> 2));
+
+ /*
+ * Deassert reset and release MC core 0 to run
+ */
+ out_le32(&mc_ccsr_regs->reg_gcr1, GCR1_P1_DE_RST | GCR1_M_ALL_DE_RST);
+ dmb();
+ debug("Polling mc_ccsr_regs->reg_gsr ...\n");
+
+ for (;;) {
+ reg_gsr = in_le32(&mc_ccsr_regs->reg_gsr);
+ mc_fw_boot_status = (reg_gsr & GSR_FS_MASK);
+ if (mc_fw_boot_status & 0x1)
+ break;
+
+ udelay(1000); /* throttle polling */
+ if (timeout-- <= 0)
+ break;
+ }
+
+ if (timeout <= 0) {
+ printf("%s: timeout booting management complex firmware\n",
+ __func__);
+
+ /* TODO: Get an error status from an MC CCSR register */
+ error = -ETIMEDOUT;
+ goto out;
+ }
+
+ printf("Management complex booted (boot status: %#x)\n",
+ mc_fw_boot_status);
+
+ if (mc_fw_boot_status != 0x1) {
+ /*
+ * TODO: Identify critical errors from the GSR register's FS
+ * field and for those errors, set error to -ENODEV or other
+ * appropriate errno, so that the status property is set to
+ * failure in the fsl,dprc device tree node.
+ */
+ }
+
+out:
+ if (error != 0)
+ mc_boot_status = -error;
+ else
+ mc_boot_status = 0;
+
+ return error;
+}
+
+int get_mc_boot_status(void)
+{
+ return mc_boot_status;
+}
+
+/**
+ * Return the actual size of the MC 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 mc_get_dram_block_size(void)
+{
+ return CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE;
+}
{
return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_DISABLED, 0);
}
+static inline int fdt_status_fail(void *fdt, int nodeoffset)
+{
+ return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_FAIL, 0);
+}
-int fdt_set_status_by_alias(void *fdt, const char* alias,
+int fdt_set_status_by_alias(void *fdt, const char *alias,
enum fdt_status status, unsigned int error_code);
-static inline int fdt_status_okay_by_alias(void *fdt, const char* alias)
+static inline int fdt_status_okay_by_alias(void *fdt, const char *alias)
{
return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_OKAY, 0);
}
-static inline int fdt_status_disabled_by_alias(void *fdt, const char* alias)
+static inline int fdt_status_disabled_by_alias(void *fdt, const char *alias)
{
return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_DISABLED, 0);
}
+static inline int fdt_status_fail_by_alias(void *fdt, const char *alias)
+{
+ return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_FAIL, 0);
+}
#endif /* ifdef CONFIG_OF_LIBFDT */
projects / u-boot / commitdiff