diff options
| -rw-r--r-- | Kconfig | 10 | ||||
| -rw-r--r-- | include/asm-generic/sections.h | 1 | ||||
| -rw-r--r-- | lib/fdtdec.c | 7 |
3 files changed, 16 insertions, 2 deletions
@@ -152,6 +152,16 @@ config SPL_STACK_R_MALLOC_SIMPLE_LEN to give board_init_r() a larger heap then the initial heap in SRAM which is limited to SYS_MALLOC_F_LEN bytes. +config SPL_SEPARATE_BSS + depends on SPL + bool "BSS section is in a different memory region from text" + help + Some platforms need a large BSS region in SPL and can provide this + because RAM is already set up. In this case BSS can be moved to RAM. + This option should then be enabled so that the correct device tree + location is used. Normally we put the device tree at the end of BSS + but with this option enabled, it goes at _image_binary_end. + config TPL bool depends on SPL && SUPPORT_TPL diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h index 458952fb58..328bc62948 100644 --- a/include/asm-generic/sections.h +++ b/include/asm-generic/sections.h @@ -71,6 +71,7 @@ extern char __bss_start[]; extern char __bss_end[]; extern char __image_copy_start[]; extern char __image_copy_end[]; +extern char _image_binary_end[]; extern char __rel_dyn_start[]; extern char __rel_dyn_end[]; diff --git a/lib/fdtdec.c b/lib/fdtdec.c index e1df144db0..c1b517706d 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -1222,8 +1222,11 @@ int fdtdec_setup(void) gd->fdt_blob = __dtb_dt_begin; # elif defined CONFIG_OF_SEPARATE # ifdef CONFIG_SPL_BUILD - /* FDT is at end of BSS */ - gd->fdt_blob = (ulong *)&__bss_end; + /* FDT is at end of BSS unless it is in a different memory region */ + if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS)) + gd->fdt_blob = (ulong *)&_image_binary_end; + else + gd->fdt_blob = (ulong *)&__bss_end; # else /* FDT is at end of image */ gd->fdt_blob = (ulong *)&_end; |
