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spl: fit: add SPL_FIT_IMAGE_TINY config to reduce code-size

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A minor code-size increase from the changes for tracking the os-type
of FIT images and from infrastructure for recording the loadables into
the the loaded FDT, broke the builds for sun50i and some OMAP2+ devices.

This change adds a new config option (enabled by default for
MACH_SUN50I, MACH_SUN50I_H5 and ARCH_OMAP2PLUS) that does skips these
processing steps (bringing code size down to below the limit
again). The os-type is not evaluated, but assumed to be IH_OS_UBOOT
(i.e. taking the code-paths intended for backward-compatibility).

Note that enabling this config option precludes any useful downstream
processing, such as utilising a special calling convention for ATF or
OPTEE, based on the os-type of the loadables.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
This commit is contained in:
Philipp Tomsich 2017-11-24 13:26:03 +01:00
parent ec4bf3d6bd
commit 337bbb6297
3 changed files with 33 additions and 5 deletions
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16
common/spl/Kconfig
View file

@ -228,6 +228,22 @@ config SPL_SHA256_SUPPORT
SHA256 variant is supported: SHA512 and others are not currently
supported in U-Boot.
config SPL_FIT_IMAGE_TINY
bool "Remove functionality from SPL FIT loading to reduce size"
depends on SPL_FIT
default y if MACH_SUN50I || MACH_SUN50I_H5
default y if ARCH_OMAP2PLUS
help
Enable this to reduce the size of the FIT image loading code
in SPL, if space for the SPL binary is very tight.
This removes the detection of image types (which forces the
first image to be treated as having a U-Boot style calling
convention) and skips the recording of each loaded payload
(i.e. loadable) into the FDT (modifying the loaded FDT to
ensure this information is available to the next image
invoked).
config SPL_CPU_SUPPORT
bool "Support CPU drivers"
help

20
common/spl/spl_fit.c
View file

@ -275,8 +275,10 @@ static int spl_fit_append_fdt(struct spl_image_info *spl_image,
/* Make the load-address of the FDT available for the SPL framework */
spl_image->fdt_addr = (void *)image_info.load_addr;
#if !CONFIG_IS_ENABLED(FIT_IMAGE_TINY)
/* Try to make space, so we can inject details on the loadables */
ret = fdt_shrink_to_minimum(spl_image->fdt_addr, 8192);
#endif
return ret;
}
@ -284,8 +286,10 @@ static int spl_fit_append_fdt(struct spl_image_info *spl_image,
static int spl_fit_record_loadable(const void *fit, int images, int index,
void *blob, struct spl_image_info *image)
{
int ret = 0;
#if !CONFIG_IS_ENABLED(FIT_IMAGE_TINY)
char *name;
int node, ret;
int node;
ret = spl_fit_get_image_name(fit, images, "loadables",
index, &name);
@ -298,9 +302,19 @@ static int spl_fit_record_loadable(const void *fit, int images, int index,
image->size, image->entry_point,
fdt_getprop(fit, node, "type", NULL),
fdt_getprop(fit, node, "os", NULL));
#endif
return ret;
}
static int spl_fit_image_get_os(const void *fit, int noffset, uint8_t *os)
{
#if CONFIG_IS_ENABLED(FIT_IMAGE_TINY)
return -ENOTSUPP;
#else
return fit_image_get_os(fit, noffset, os);
#endif
}
int spl_load_simple_fit(struct spl_image_info *spl_image,
struct spl_load_info *info, ulong sector, void *fit)
{
@ -392,7 +406,7 @@ int spl_load_simple_fit(struct spl_image_info *spl_image,
* 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))
if (!spl_fit_image_get_os(fit, node, &spl_image->os))
debug("Image OS is %s\n", genimg_get_os_name(spl_image->os));
#if !defined(CONFIG_SPL_OS_BOOT)
else
@ -420,7 +434,7 @@ int spl_load_simple_fit(struct spl_image_info *spl_image,
if (ret < 0)
continue;
if (!fit_image_get_os(fit, node, &os_type))
if (!spl_fit_image_get_os(fit, node, &os_type))
debug("Loadable is %s\n", genimg_get_os_name(os_type));
if (os_type == IH_OS_U_BOOT) {

2
include/fdt_support.h
View file

@ -133,7 +133,6 @@ void fdt_fixup_crypto_node(void *blob, int sec_rev);
static inline void fdt_fixup_crypto_node(void *blob, int sec_rev) {}
#endif
#if CONFIG_IS_ENABLED(LOAD_FIT)
/**
* Record information about a processed loadable in /fit-images (creating
* /fit-images if necessary).
@ -151,7 +150,6 @@ static inline void fdt_fixup_crypto_node(void *blob, int sec_rev) {}
int fdt_record_loadable(void *blob, u32 index, const char *name,
uintptr_t load_addr, u32 size, uintptr_t entry_point,
const char *type, const char *os);
#endif
#ifdef CONFIG_PCI
#include <pci.h>