According to the U-Boot documentation for the FIT file format, the load
and entry have to be allways defined for a "kernel" or "standalone".
But Barebox ignored the parameters. That changes with this patch.
For backward compatibility the default address is still used for images
without `load` or `entry`.
Signed-off-by: Christian Mauderer <christian.mauderer@xxxxxxxxxxxxxxxxxx>
---
arch/arm/mach-layerscape/ppa.c | 3 +-
common/bootm.c | 7 +++--
common/image-fit.c | 57 ++++++++++++++++++++++++++++++++--
include/image-fit.h | 3 +-
4 files changed, 63 insertions(+), 7 deletions(-)
diff --git a/arch/arm/mach-layerscape/ppa.c b/arch/arm/mach-layerscape/ppa.c
index 477e89478..3eb7ab641 100644
--- a/arch/arm/mach-layerscape/ppa.c
+++ b/arch/arm/mach-layerscape/ppa.c
@@ -82,7 +82,8 @@ static int ppa_init(void *ppa, size_t ppa_size, void *sec_firmware_addr)
}
- ret = fit_open_image(fit, conf, "firmware", &buf, &firmware_size);
+ ret = fit_open_image(fit, conf, "firmware", &buf, &firmware_size,
+ NULL, NULL);
if (ret) {
pr_err("Cannot open firmware image in ppa FIT image: %s\n",
strerror(-ret));
diff --git a/common/bootm.c b/common/bootm.c
index 366f31455..94600cae3 100644
--- a/common/bootm.c
+++ b/common/bootm.c
@@ -222,7 +222,7 @@ int bootm_load_initrd(struct image_data *data, unsigned long load_address)
unsigned long initrd_size;
ret = fit_open_image(data->os_fit, data->fit_config, "ramdisk",
- &initrd, &initrd_size);
+ &initrd, &initrd_size, NULL, NULL);
data->initrd_res = request_sdram_region("initrd",
load_address,
@@ -348,7 +348,7 @@ void *bootm_get_devicetree(struct image_data *data)
unsigned long of_size;
ret = fit_open_image(data->os_fit, data->fit_config, "fdt",
- &of_tree, &of_size);
+ &of_tree, &of_size, NULL, NULL);
if (ret)
return ERR_PTR(ret);
@@ -622,7 +622,8 @@ int bootm_boot(struct bootm_data *bootm_data)
}
ret = fit_open_image(data->os_fit, data->fit_config, "kernel",
- &data->fit_kernel, &data->fit_kernel_size);
+ &data->fit_kernel, &data->fit_kernel_size,
+ &data->os_address, &data->os_entry);
if (ret)
goto err_out;
}
diff --git a/common/image-fit.c b/common/image-fit.c
index 2681d62a9..310013121 100644
--- a/common/image-fit.c
+++ b/common/image-fit.c
@@ -517,12 +517,30 @@ int fit_has_image(struct fit_handle *handle, void *configuration,
return 1;
}
+static int fit_get_address(struct device_node *image, const char *property,
+ unsigned long *addr)
+{
+ const __be32 *cell;
+ int len = 0;
+
+ cell = of_get_property(image, property, &len);
+ if (!cell)
+ return -EINVAL;
+ if (len > sizeof(*addr))
+ return -ENOTSUPP;
+
+ *addr = (unsigned long)of_read_number(cell, len / sizeof(*cell));
+ return 0;
+}
+
/**
* fit_open_image - Open an image in a FIT image
* @handle: The FIT image handle
* @name: The name of the image to open
* @outdata: The returned image
* @outsize: Size of the returned image
+ * @load: The load address given by the image
+ * @entry: The entry address given by the image
*
* Open an image in a FIT image. The returned image is freed during fit_close().
* @configuration holds the cookie returned from fit_open_configuration() if
@@ -532,14 +550,21 @@ int fit_has_image(struct fit_handle *handle, void *configuration,
* then only the hash is checked (because opening the configuration already
* checks the RSA signature of all involved nodes).
*
+ * The load address and entry point of the image description in the FIT will be
+ * parsed if they exist and if the @load and @entry parameters are not NULL.
+ * Otherwise @load and @entry won't be changed.
+ *
* Return: 0 for success, negative error code otherwise
*/
int fit_open_image(struct fit_handle *handle, void *configuration,
const char *name, const void **outdata,
- unsigned long *outsize)
+ unsigned long *outsize, unsigned long *load,
+ unsigned long *entry)
{
struct device_node *image;
const char *unit, *type = NULL, *desc= "(no description)";
+ char load_str[sizeof("; load: 0x12345678")] = "";
+ char entry_str[sizeof("; entry (relative to load): 0x12345678")] = "";
const void *data;
int data_len;
int ret = 0;
@@ -559,7 +584,35 @@ int fit_open_image(struct fit_handle *handle, void *configuration,
return -ENOENT;
of_property_read_string(image, "description", &desc);
- pr_info("image '%s': '%s'\n", unit, desc);
+
+ if (load) {
+ ret = fit_get_address(image, "load", load);
+ if (ret < 0) {
+ pr_info("Couldn't get load address in %s. Use default.\n", image->full_name);
+ ret = 0;
+ }
+ }
+
+ if (load && entry) {
+ ret = fit_get_address(image, "entry", entry);
+ if (ret < 0) {
+ pr_info("Couldn't get entry point in %s. Use default.\n", image->full_name);
+ ret = 0;
+ } else {
+ /* Barebox uses an entry relative to load but the FIT
+ * images assume an absolute entry. */
+ *entry -= *load;
+ }
+ }
+
+ if (load) {
+ snprintf(load_str, sizeof(load_str), "; load: 0x%08lx", *load);
+ }
+ if (load) {
+ snprintf(entry_str, sizeof(entry_str),
+ "; entry (relative to load): 0x%08lx", *entry);
+ }
+ pr_info("image '%s': '%s'%s%s\n", unit, desc, load_str, entry_str);
of_property_read_string(image, "type", &type);
if (!type) {
diff --git a/include/image-fit.h b/include/image-fit.h
index 27c9e8351..038732d0d 100644
--- a/include/image-fit.h
+++ b/include/image-fit.h
@@ -31,7 +31,8 @@ int fit_has_image(struct fit_handle *handle, void *configuration,
const char *name);
int fit_open_image(struct fit_handle *handle, void *configuration,
const char *name, const void **outdata,
- unsigned long *outsize);
+ unsigned long *outsize, unsigned long *load,
+ unsigned long *entry);
void fit_close(struct fit_handle *handle);
--
2.26.2
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