Whitebox
/
u-boot
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

spl: fit: simplify logic for FDT loading for non-OS boots

Browse Source 
To better support bootin through an ATF or OPTEE, we need to
streamline some of the logic for when the FDT is appended to an image:
depending on the image type, we'd like to append the FDT not at all
(the case for the OS boot), to the 'firmware' image (if it is a
U-Boot) or to one of the loadables (if the 'firmware' is an ATF, an
OPTEE, or some other image-type and U-Boot is listed in the
loadabled).

To achieve this goal, we drop the os_boot flag and track the type of
image loaded.  If it is of type IH_OS_U_BOOT, we append the FDT.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Acked-by: York Sun <york.sun@nxp.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
master
Philipp Tomsich 8 years ago
parent f2efe6786e
commit d879616e9e
1 changed files with 56 additions and 30 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 86
      common/spl/spl_fit.c

86
common/spl/spl_fit.c
Unescape View File

@ -218,6 +218,30 @@ static int spl_load_fit_image(struct spl_load_info *info, ulong sector,
return 0;
}
static int spl_fit_append_fdt(struct spl_image_info *spl_image,
struct spl_load_info *info, ulong sector,
void *fit, int images, ulong base_offset)
{
struct spl_image_info image_info;
int node, ret;
/* Figure out which device tree the board wants to use */
node = spl_fit_get_image_node(fit, images, FIT_FDT_PROP, 0);
if (node < 0) {
debug("%s: cannot find FDT node\n", __func__);
return node;
}
/*
* Read the device tree and place it after the image.
* Align the destination address to ARCH_DMA_MINALIGN.
*/
image_info.load_addr = spl_image->load_addr + spl_image->size;
ret = spl_load_fit_image(info, sector, fit, base_offset, node,
&image_info);
return ret;
}
int spl_load_simple_fit(struct spl_image_info *spl_image,
struct spl_load_info *info, ulong sector, void *fit)
{
@ -225,7 +249,6 @@ int spl_load_simple_fit(struct spl_image_info *spl_image,
ulong size;
unsigned long count;
struct spl_image_info image_info;
bool boot_os = false;
int node = -1;
int images, ret;
int base_offset, align_len = ARCH_DMA_MINALIGN - 1;
@ -273,17 +296,18 @@ int spl_load_simple_fit(struct spl_image_info *spl_image,
return -1;
}
/*
* Find the U-Boot image using the following search order:
* - start at 'firmware' (e.g. an ARM Trusted Firmware)
* - fall back 'kernel' (e.g. a Falcon-mode OS boot
* - fall back to using the first 'loadables' entry
*/
if (node < 0)
node = spl_fit_get_image_node(fit, images, "firmware", 0);
#ifdef CONFIG_SPL_OS_BOOT
/* Find OS image first */
node = spl_fit_get_image_node(fit, images, FIT_KERNEL_PROP, 0);
if (node < 0)
debug("No kernel image.\n");
else
boot_os = true;
node = spl_fit_get_image_node(fit, images, FIT_KERNEL_PROP, 0);
#endif
/* find the U-Boot image */
if (node < 0)
node = spl_fit_get_image_node(fit, images, "firmware", 0);
if (node < 0) {
debug("could not find firmware image, trying loadables...\n");
node = spl_fit_get_image_node(fit, images, "loadables", 0);
@ -305,34 +329,29 @@ int spl_load_simple_fit(struct spl_image_info *spl_image,
if (ret)
return ret;
#ifdef CONFIG_SPL_OS_BOOT
/*
* For backward compatibility, we treat the first node that is
* as a U-Boot image, if no OS-type has been declared.
*/
if (!fit_image_get_os(fit, node, &spl_image->os))
debug("Image OS is %s\n", genimg_get_os_name(spl_image->os));
#else
spl_image->os = IH_OS_U_BOOT;
#if !defined(CONFIG_SPL_OS_BOOT)
else
spl_image->os = IH_OS_U_BOOT;
#endif
if (!boot_os) {
/* Figure out which device tree the board wants to use */
node = spl_fit_get_image_node(fit, images, FIT_FDT_PROP, 0);
if (node < 0) {
debug("%s: cannot find FDT node\n", __func__);
return node;
}
/*
* Read the device tree and place it after the image.
* Align the destination address to ARCH_DMA_MINALIGN.
*/
image_info.load_addr = spl_image->load_addr + spl_image->size;
ret = spl_load_fit_image(info, sector, fit, base_offset, node,
&image_info);
if (ret < 0)
return ret;
}
/*
* Booting a next-stage U-Boot may require us to append the FDT.
* We allow this to fail, as the U-Boot image might embed its FDT.
*/
if (spl_image->os == IH_OS_U_BOOT)
spl_fit_append_fdt(spl_image, info, sector, fit,
images, base_offset);
/* Now check if there are more images for us to load */
for (; ; index++) {
uint8_t os_type = IH_OS_INVALID;
node = spl_fit_get_image_node(fit, images, "loadables", index);
if (node < 0)
break;
@ -342,6 +361,13 @@ int spl_load_simple_fit(struct spl_image_info *spl_image,
if (ret < 0)
continue;
if (!fit_image_get_os(fit, node, &os_type))
debug("Loadable is %s\n", genimg_get_os_name(os_type));
if (spl_image->os == IH_OS_U_BOOT)
spl_fit_append_fdt(spl_image, info, sector,
fit, images, base_offset);
/*
* If the "firmware" image did not provide an entry point,
* use the first valid entry point from the loadables.

Write Preview
Loading…
Cancel
Save