[PATCH 07/21] mci: imx-esdhc-pbl: move imx_load_image into common xload code
Marco Felsch
m.felsch at pengutronix.de
Thu Mar 9 02:40:39 PST 2023
Make the function public available so we can reuse it for other boot
mediums like QSPI. No functional changes
Signed-off-by: Marco Felsch <m.felsch at pengutronix.de>
---
arch/arm/mach-imx/xload-common.c | 120 +++++++++++++++++++++++++++++++++++++++
drivers/mci/imx-esdhc-pbl.c | 118 --------------------------------------
include/mach/imx/xload.h | 5 ++
3 files changed, 125 insertions(+), 118 deletions(-)
diff --git a/arch/arm/mach-imx/xload-common.c b/arch/arm/mach-imx/xload-common.c
index 5a437b185d..0d3e6be1b1 100644
--- a/arch/arm/mach-imx/xload-common.c
+++ b/arch/arm/mach-imx/xload-common.c
@@ -1,11 +1,13 @@
// SPDX-License-Identifier: GPL-2.0-only
#include <common.h>
+#include <asm/cache.h>
#include <asm/sections.h>
#include <linux/sizes.h>
#include <mach/imx/xload.h>
#include <mach/imx/esdctl.h>
#include <mach/imx/imx8m-regs.h>
+#include <mach/imx/imx-header.h>
#include <asm/barebox-arm.h>
int imx_image_size(void)
@@ -26,3 +28,121 @@ struct imx_scratch_space *__imx8m_scratch_space(int ddr_buswidth)
return (void *)__arm_mem_scratch(endmem);
}
+
+#define HDR_SIZE 512
+
+static int
+imx_search_header(struct imx_flash_header_v2 **header_pointer,
+ void *buffer, u32 *offset, u32 ivt_offset,
+ int (*read)(void *dest, size_t len, void *priv),
+ void *priv)
+{
+ int ret;
+ int i, header_count = 1;
+ void *buf = buffer;
+ struct imx_flash_header_v2 *hdr;
+
+ for (i = 0; i < header_count; i++) {
+ ret = read(buf, *offset + ivt_offset + HDR_SIZE, priv);
+ if (ret)
+ return ret;
+
+ hdr = buf + *offset + ivt_offset;
+
+ if (!is_imx_flash_header_v2(hdr)) {
+ pr_debug("No IVT header! "
+ "Found tag: 0x%02x length: 0x%04x "
+ "version: %02x\n",
+ hdr->header.tag, hdr->header.length,
+ hdr->header.version);
+ return -EINVAL;
+ }
+
+ if (IS_ENABLED(CONFIG_ARCH_IMX8MQ) &&
+ hdr->boot_data.plugin & PLUGIN_HDMI_IMAGE) {
+ /*
+ * In images that include signed HDMI
+ * firmware, first v2 header would be
+ * dedicated to that and would not contain any
+ * useful for us information. In order for us
+ * to pull the rest of the bootloader image
+ * in, we need to re-read header from SD/MMC,
+ * this time skipping anything HDMI firmware
+ * related.
+ */
+ *offset += hdr->boot_data.size + hdr->header.length;
+ header_count++;
+ }
+ }
+ *header_pointer = hdr;
+ return 0;
+}
+
+int imx_load_image(ptrdiff_t address, ptrdiff_t entry, u32 offset,
+ u32 ivt_offset, bool start, unsigned int alignment,
+ int (*read)(void *dest, size_t len, void *priv),
+ void *priv)
+{
+
+ void *buf = (void *)address;
+ struct imx_flash_header_v2 *hdr = NULL;
+ int ret, len;
+ void __noreturn (*bb)(void);
+ unsigned int ofs;
+
+ len = imx_image_size();
+ if (alignment)
+ len = ALIGN(len, alignment);
+
+ ret = imx_search_header(&hdr, buf, &offset, ivt_offset, read, priv);
+ if (ret)
+ return ret;
+
+ pr_debug("Check ok, loading image\n");
+
+ ofs = offset + hdr->entry - hdr->boot_data.start;
+
+ if (entry != address) {
+ /*
+ * Passing entry different from address is interpreted
+ * as a request to place the image such that its entry
+ * point would be exactly at 'entry', that is:
+ *
+ * buf + ofs = entry
+ *
+ * solving the above for 'buf' gives us the
+ * adjustment that needs to be made:
+ *
+ * buf = entry - ofs
+ *
+ */
+ if (WARN_ON(entry - ofs < address)) {
+ /*
+ * We want to make sure we won't try to place
+ * the start of the image before the beginning
+ * of the memory buffer we were given in
+ * address.
+ */
+ return -EINVAL;
+ }
+
+ buf = (void *)(entry - ofs);
+ }
+
+ ret = read(buf, ofs + len, priv);
+ if (ret) {
+ pr_err("Loading image failed with %d\n", ret);
+ return ret;
+ }
+
+ pr_debug("Image loaded successfully\n");
+
+ if (!start)
+ return 0;
+
+ bb = buf + ofs;
+
+ sync_caches_for_execution();
+
+ bb();
+}
diff --git a/drivers/mci/imx-esdhc-pbl.c b/drivers/mci/imx-esdhc-pbl.c
index 4884a68837..7c5febb7a8 100644
--- a/drivers/mci/imx-esdhc-pbl.c
+++ b/drivers/mci/imx-esdhc-pbl.c
@@ -104,124 +104,6 @@ static int esdhc_read_blocks(struct fsl_esdhc_host *host, void *dst, size_t len)
}
#ifdef CONFIG_ARCH_IMX
-#define HDR_SIZE 512
-
-static int
-imx_search_header(struct imx_flash_header_v2 **header_pointer,
- void *buffer, u32 *offset, u32 ivt_offset,
- int (*read)(void *dest, size_t len, void *priv),
- void *priv)
-{
- int ret;
- int i, header_count = 1;
- void *buf = buffer;
- struct imx_flash_header_v2 *hdr;
-
- for (i = 0; i < header_count; i++) {
- ret = read(buf, *offset + ivt_offset + HDR_SIZE, priv);
- if (ret)
- return ret;
-
- hdr = buf + *offset + ivt_offset;
-
- if (!is_imx_flash_header_v2(hdr)) {
- pr_debug("No IVT header! "
- "Found tag: 0x%02x length: 0x%04x "
- "version: %02x\n",
- hdr->header.tag, hdr->header.length,
- hdr->header.version);
- return -EINVAL;
- }
-
- if (IS_ENABLED(CONFIG_ARCH_IMX8MQ) &&
- hdr->boot_data.plugin & PLUGIN_HDMI_IMAGE) {
- /*
- * In images that include signed HDMI
- * firmware, first v2 header would be
- * dedicated to that and would not contain any
- * useful for us information. In order for us
- * to pull the rest of the bootloader image
- * in, we need to re-read header from SD/MMC,
- * this time skipping anything HDMI firmware
- * related.
- */
- *offset += hdr->boot_data.size + hdr->header.length;
- header_count++;
- }
- }
- *header_pointer = hdr;
- return 0;
-}
-
-int imx_load_image(ptrdiff_t address, ptrdiff_t entry, u32 offset,
- u32 ivt_offset, bool start, unsigned int alignment,
- int (*read)(void *dest, size_t len, void *priv),
- void *priv)
-{
-
- void *buf = (void *)address;
- struct imx_flash_header_v2 *hdr = NULL;
- int ret, len;
- void __noreturn (*bb)(void);
- unsigned int ofs;
-
- len = imx_image_size();
- if (alignment)
- len = ALIGN(len, alignment);
-
- ret = imx_search_header(&hdr, buf, &offset, ivt_offset, read, priv);
- if (ret)
- return ret;
-
- pr_debug("Check ok, loading image\n");
-
- ofs = offset + hdr->entry - hdr->boot_data.start;
-
- if (entry != address) {
- /*
- * Passing entry different from address is interpreted
- * as a request to place the image such that its entry
- * point would be exactly at 'entry', that is:
- *
- * buf + ofs = entry
- *
- * solving the above for 'buf' gives us the
- * adjustment that needs to be made:
- *
- * buf = entry - ofs
- *
- */
- if (WARN_ON(entry - ofs < address)) {
- /*
- * We want to make sure we won't try to place
- * the start of the image before the beginning
- * of the memory buffer we were given in
- * address.
- */
- return -EINVAL;
- }
-
- buf = (void *)(entry - ofs);
- }
-
- ret = read(buf, ofs + len, priv);
- if (ret) {
- pr_err("Loading image failed with %d\n", ret);
- return ret;
- }
-
- pr_debug("Image loaded successfully\n");
-
- if (!start)
- return 0;
-
- bb = buf + ofs;
-
- sync_caches_for_execution();
-
- bb();
-}
-
static int imx_read_blocks(void *dest, size_t len, void *priv)
{
return esdhc_read_blocks(priv, dest, len);
diff --git a/include/mach/imx/xload.h b/include/mach/imx/xload.h
index 86270b03dc..e9d41adc97 100644
--- a/include/mach/imx/xload.h
+++ b/include/mach/imx/xload.h
@@ -25,6 +25,11 @@ void __noreturn imx8mm_load_and_start_image_via_tfa(void);
void __noreturn imx8mn_load_and_start_image_via_tfa(void);
void __noreturn imx8mp_load_and_start_image_via_tfa(void);
+int imx_load_image(ptrdiff_t address, ptrdiff_t entry, u32 offset,
+ u32 ivt_offset, bool start, unsigned int alignment,
+ int (*read)(void *dest, size_t len, void *priv),
+ void *priv);
+
int imx_image_size(void);
int piggydata_size(void);
--
2.30.2
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