summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-imx/romapi.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-imx/romapi.c')
-rw-r--r--arch/arm/mach-imx/romapi.c289
1 files changed, 278 insertions, 11 deletions
diff --git a/arch/arm/mach-imx/romapi.c b/arch/arm/mach-imx/romapi.c
index 5d00d71154..0f1555abad 100644
--- a/arch/arm/mach-imx/romapi.c
+++ b/arch/arm/mach-imx/romapi.c
@@ -1,9 +1,51 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#define pr_fmt(fmt) "romapi: " fmt
+
#include <common.h>
+#include <linux/bitfield.h>
+#include <soc/imx9/flash_header.h>
#include <asm/sections.h>
-#include <mach/romapi.h>
-#include <mach/atf.h>
+#include <mach/imx/romapi.h>
+#include <mach/imx/atf.h>
+#include <mach/imx/imx8m-regs.h>
+#include <mach/imx/xload.h>
+#include <mach/imx/generic.h>
+#include <asm/barebox-arm.h>
+#include <zero_page.h>
+#include <memory.h>
+#include <init.h>
+#include <pbl.h>
+#include <mmu.h>
+#include <bootsource.h>
+
+#define BOOTROM_INFO_VERSION 0x1
+#define BOOTROM_INFO_BOOT_DEVICE 0x2
+#define BOOTROM_INFO_DEVICE_PAGE_SIZE 0x3
+#define BOOTROM_INFO_OFFSET_IVT 0x4
+#define BOOTROM_INFO_BOOT_STAGE 0x5
+#define BOOTROM_INFO_OFFSET_IMAGE 0x6
+
+#define BOOTROM_BOOT_DEVICE_INTERFACE GENMASK(23, 16)
+#define BOOTROM_BOOT_DEVICE_INSTANCE GENMASK(15, 8)
+#define BOOTROM_BOOT_DEVICE_STATE GENMASK(7, 0)
+
+static int imx_bootrom_query(struct rom_api *rom_api, uint32_t type, uint32_t *__info)
+{
+ static uint32_t info;
+ uint32_t xor = type ^ (uintptr_t)&info;
+ int ret;
+
+ ret = rom_api->query_boot_infor(type, &info, xor);
+ if (ret != ROM_API_OKAY)
+ return -EIO;
+
+ *__info = info;
+
+ return 0;
+}
-static int imx8m_bootrom_load(struct rom_api *rom_api, void *adr, size_t size)
+static int imx_romapi_load_stream(struct rom_api *rom_api, void *adr, size_t size)
{
while (size) {
size_t chunksize = min(size, (size_t)1024);
@@ -19,26 +61,251 @@ static int imx8m_bootrom_load(struct rom_api *rom_api, void *adr, size_t size)
adr += chunksize;
size -= chunksize;
}
+ return 0;
+}
+
+static int imx_romapi_load_seekable(struct rom_api *rom_api, void *adr, uint32_t offset,
+ size_t size)
+{
+ int ret;
+
+ size = PAGE_ALIGN(size);
+
+ ret = rom_api->download_image(adr, offset, size,
+ (uintptr_t)adr ^ offset ^ size);
+ if (ret != ROM_API_OKAY) {
+ pr_err("Failed to load piggy data (ret = %x)\n", ret);
+ return -EIO;
+ }
return 0;
}
/* read piggydata via a bootrom callback and place it behind our copy in SDRAM */
-static int imx8m_bootrom_load_image(struct rom_api *rom_api)
+static int imx_romapi_load_image(struct rom_api *rom_api, void *bl33)
{
- return imx8m_bootrom_load(rom_api,
- (void *)MX8M_ATF_BL33_BASE_ADDR + barebox_pbl_size,
- __image_end - __piggydata_start);
+ return imx_romapi_load_stream(rom_api, bl33 + barebox_pbl_size,
+ __image_end - __piggydata_start);
}
-int imx8mp_bootrom_load_image(void)
+int imx8mp_romapi_load_image(void *bl33)
{
struct rom_api *rom_api = (void *)0x980;
- return imx8m_bootrom_load_image(rom_api);
+ OPTIMIZER_HIDE_VAR(rom_api);
+
+ return imx_romapi_load_image(rom_api, bl33);
+}
+
+int imx8mn_romapi_load_image(void *bl33)
+{
+ return imx8mp_romapi_load_image(bl33);
+}
+
+static int imx_romapi_boot_device(struct rom_api *rom_api)
+{
+ uint32_t boot_device_type, boot_instance, boot_device;
+ enum bootsource bootsource = BOOTSOURCE_UNKNOWN;
+ int ret;
+
+ ret = imx_bootrom_query(rom_api, BOOTROM_INFO_BOOT_DEVICE, &boot_device);
+ if (ret)
+ return ret;
+
+ boot_device_type = FIELD_GET(BOOTROM_BOOT_DEVICE_INTERFACE, boot_device);
+ boot_instance = FIELD_GET(BOOTROM_BOOT_DEVICE_INSTANCE, boot_device);
+
+ switch (boot_device_type) {
+ case BT_DEV_TYPE_MMC:
+ case BT_DEV_TYPE_SD:
+ bootsource = BOOTSOURCE_MMC;
+ break;
+ case BT_DEV_TYPE_NAND:
+ bootsource = BOOTSOURCE_NAND;
+ break;
+ case BT_DEV_TYPE_FLEXSPINOR:
+ case BT_DEV_TYPE_SPI_NOR:
+ bootsource = BOOTSOURCE_SPI_NOR;
+ break;
+ case BT_DEV_TYPE_USB:
+ bootsource = BOOTSOURCE_USB;
+ break;
+ }
+
+ bootsource_set(bootsource, boot_instance);
+
+ return 0;
+}
+
+static int imx_romapi_boot_device_seekable(struct rom_api *rom_api)
+{
+ uint32_t boot_device, boot_device_type, boot_device_state;
+ int ret;
+ bool seekable;
+
+ ret = imx_bootrom_query(rom_api, BOOTROM_INFO_BOOT_DEVICE, &boot_device);
+ if (ret)
+ return ret;
+
+ boot_device_type = FIELD_GET(BOOTROM_BOOT_DEVICE_INTERFACE, boot_device);
+
+ switch (boot_device_type) {
+ case BT_DEV_TYPE_SD:
+ case BT_DEV_TYPE_NAND:
+ case BT_DEV_TYPE_FLEXSPINOR:
+ case BT_DEV_TYPE_SPI_NOR:
+ seekable = true;
+ break;
+ case BT_DEV_TYPE_USB:
+ seekable = false;
+ break;
+ case BT_DEV_TYPE_MMC:
+ boot_device_state = FIELD_GET(BOOTROM_BOOT_DEVICE_STATE, boot_device);
+ if (boot_device_state & BIT(0))
+ seekable = false;
+ else
+ seekable = true;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return seekable;
+}
+
+int imx93_romapi_load_image(void)
+{
+ struct rom_api *rom_api = (void *)0x1980;
+ int ret;
+ int seekable;
+ uint32_t offset, image_offset;
+ void *bl33 = (void *)MX93_ATF_BL33_BASE_ADDR;
+ struct flash_header_v3 *fh;
+
+ OPTIMIZER_HIDE_VAR(rom_api);
+
+ seekable = imx_romapi_boot_device_seekable(rom_api);
+ if (seekable < 0)
+ return seekable;
+
+ if (!seekable) {
+ int align_size = ALIGN(barebox_pbl_size, 1024) - barebox_pbl_size;
+ void *pbl_size_aligned = bl33 + ALIGN(barebox_pbl_size, 1024);
+
+ /*
+ * The USB protocol uploads in chunks of 1024 bytes. This means
+ * the initial piggy data up to the next 1KiB boundary is already
+ * transferred. Align up the start address to this boundary.
+ */
+
+ return imx_romapi_load_stream(rom_api,
+ pbl_size_aligned,
+ __image_end - __piggydata_start - align_size);
+ }
+
+ ret = imx_bootrom_query(rom_api, BOOTROM_INFO_OFFSET_IMAGE, &offset);
+ if (ret)
+ return ret;
+
+ pr_debug("%s: IVT offset on boot device: 0x%08x\n", __func__, offset);
+
+ ret = imx_romapi_load_seekable(rom_api, bl33, offset, 4096);
+ if (ret)
+ return ret;
+
+ fh = bl33;
+
+ if (fh->tag != 0x87) {
+ pr_err("Invalid IVT header: 0x%02x, expected 0x87\n", fh->tag);
+ return -EINVAL;
+ }
+
+ image_offset = fh->img[0].offset;
+
+ pr_debug("%s: offset in image: 0x%08x\n", __func__, image_offset);
+
+ /*
+ * We assume the first image in the first container is the barebox image,
+ * which is what the imx9image call in images/Makefile.imx generates.
+ */
+ ret = imx_romapi_load_seekable(rom_api, bl33, offset + image_offset, barebox_image_size);
+ if (ret)
+ return ret;
+
+ return ret;
+}
+
+const u32 *imx8m_get_bootrom_log(void)
+{
+ if (current_el() == 3) {
+ ulong *rom_log_addr_offset = (void *)0x9e0;
+ ulong rom_log_addr;
+
+ OPTIMIZER_HIDE_VAR(rom_log_addr_offset);
+
+ zero_page_access();
+ rom_log_addr = *rom_log_addr_offset;
+ zero_page_faulting();
+
+ if (rom_log_addr < MX8M_OCRAM_BASE_ADDR ||
+ rom_log_addr >= MX8M_OCRAM_BASE_ADDR + MX8M_OCRAM_MAX_SIZE ||
+ rom_log_addr & 0x3) {
+ pr_warn("No BootROM log found at address 0x%08lx\n", rom_log_addr);
+ return NULL;
+ }
+
+ return (u32 *)rom_log_addr;
+ }
+
+ if (!IN_PBL)
+ return imx8m_scratch_get_bootrom_log();
+
+ return NULL;
}
-int imx8mn_bootrom_load_image(void)
+void imx8m_save_bootrom_log(void)
{
- return imx8mp_bootrom_load_image();
+ const u32 *rom_log;
+
+ if (!IS_ENABLED(CONFIG_IMX_SAVE_BOOTROM_LOG)) {
+ pr_debug("skipping bootrom log saving\n");
+ return;
+ }
+
+ rom_log = imx8m_get_bootrom_log();
+ if (!rom_log) {
+ pr_warn("bootrom log not found\n");
+ return;
+ }
+
+ imx8m_scratch_save_bootrom_log(rom_log);
+}
+
+#define IMX93_BOOT_ROM_BASE 0x1000
+#define IMX93_BOOT_ROM_END (0x40000 - 1)
+
+void imx93_bootsource(void)
+{
+ struct rom_api *rom_api = (void *)0x1980;
+ struct resource rom = {
+ .start = IMX93_BOOT_ROM_BASE,
+ .end = IMX93_BOOT_ROM_END,
+ };
+ struct resource *r;
+ int ret;
+
+ r = request_iomem_region("Boot ROM", rom.start, rom.end);
+ if (IS_ERR(r)) {
+ ret = PTR_ERR(r);
+ goto out;
+ }
+
+ arch_remap_range((void *)rom.start, rom.start, resource_size(&rom), MAP_CACHED);
+
+ OPTIMIZER_HIDE_VAR(rom_api);
+
+ ret = imx_romapi_boot_device(rom_api);
+out:
+ if (ret)
+ pr_err("Failed to get bootsource: %pe\n", ERR_PTR(ret));
}