From 8bee2d251afb61c203aa94877cf5077731822ed5 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Mon, 13 Nov 2017 18:55:03 -0700 Subject: [PATCH] binman: Add binman symbol support to SPL Allow SPL to access binman symbols and use this to get the address of U-Boot. This falls back to CONFIG_SYS_TEXT_BASE if the binman symbol is not available. Signed-off-by: Simon Glass --- common/spl/spl.c | 16 ++++++++++++++-- include/binman_sym.h | 13 +++++++++++++ include/spl.h | 11 +++++++++++ 3 files changed, 38 insertions(+), 2 deletions(-) diff --git a/common/spl/spl.c b/common/spl/spl.c index 3bb20c7..76c1963 100644 --- a/common/spl/spl.c +++ b/common/spl/spl.c @@ -8,6 +8,7 @@ */ #include +#include #include #include #include @@ -32,6 +33,9 @@ DECLARE_GLOBAL_DATA_PTR; u32 *boot_params_ptr = NULL; +/* See spl.h for information about this */ +binman_sym_declare(ulong, u_boot_any, pos); + /* Define board data structure */ static bd_t bdata __attribute__ ((section(".data"))); @@ -120,9 +124,17 @@ __weak void spl_board_prepare_for_boot(void) void spl_set_header_raw_uboot(struct spl_image_info *spl_image) { + ulong u_boot_pos = binman_sym(ulong, u_boot_any, pos); + spl_image->size = CONFIG_SYS_MONITOR_LEN; - spl_image->entry_point = CONFIG_SYS_UBOOT_START; - spl_image->load_addr = CONFIG_SYS_TEXT_BASE; + if (u_boot_pos != BINMAN_SYM_MISSING) { + /* biman does not support separate entry addresses at present */ + spl_image->entry_point = u_boot_pos; + spl_image->load_addr = u_boot_pos; + } else { + spl_image->entry_point = CONFIG_SYS_UBOOT_START; + spl_image->load_addr = CONFIG_SYS_TEXT_BASE; + } spl_image->os = IH_OS_U_BOOT; spl_image->name = "U-Boot"; } diff --git a/include/binman_sym.h b/include/binman_sym.h index 3999b26..87d03d5 100644 --- a/include/binman_sym.h +++ b/include/binman_sym.h @@ -38,6 +38,17 @@ __attribute__((aligned(4), unused, section(".binman_sym"))) /** + * binman_sym_extern() - Declare a extern symbol that will be used at run-time + * + * @_type: Type f the symbol (e.g. unsigned long) + * @entry_name: Name of the entry to look for (e.g. 'u_boot_spl') + * @_prop_name: Property value to get from that entry (e.g. 'pos') + */ +#define binman_sym_extern(_type, _entry_name, _prop_name) \ + extern _type binman_symname(_entry_name, _prop_name) \ + __attribute__((aligned(4), unused, section(".binman_sym"))) + +/** * binman_sym_declare_optional() - Declare an optional symbol * * If this symbol cannot be provided by binman, an error will not be generated. @@ -73,6 +84,8 @@ #define binman_sym_declare_optional(_type, _entry_name, _prop_name) +#define binman_sym_extern(_type, _entry_name, _prop_name) + #define binman_sym(_type, _entry_name, _prop_name) BINMAN_SYM_MISSING #endif /* BINMAN */ diff --git a/include/spl.h b/include/spl.h index 308ce7b..c14448b 100644 --- a/include/spl.h +++ b/include/spl.h @@ -7,6 +7,8 @@ #ifndef _SPL_H_ #define _SPL_H_ +#include + /* Platform-specific defines */ #include #include @@ -51,6 +53,15 @@ struct spl_load_info { void *buf); }; +/* + * We need to know the position of U-Boot in memory so we can jump to it. We + * allow any U-Boot binary to be used (u-boot.bin, u-boot-nodtb.bin, + * u-boot.img), hence the '_any'. These is no checking here that the correct + * image is found. For * example if u-boot.img is used we don't check that + * spl_parse_image_header() can parse a valid header. + */ +binman_sym_extern(ulong, u_boot_any, pos); + /** * spl_load_simple_fit() - Loads a fit image from a device. * @spl_image: Image description to set up -- 2.7.4