Link symbols as created by the link script can either be absolute or relative to the text start. This option switches between the two options so that we can support both.
As we convert architectures over to generic board, we can see if this option is actually needed, or whether it is possible to unify this feature also.
Signed-off-by: Simon Glass sjg@chromium.org ---
README | 6 ++++++ common/board_f.c | 11 +++++++++++ 2 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/README b/README index a9d5a77..7f853d1 100644 --- a/README +++ b/README @@ -2754,6 +2754,12 @@ Configuration Settings: its config.mk file). If you find problems enabling this option on your board please report the problem and send patches!
+- CONFIG_SYS_SYM_OFFSETS + This is set by architectures that use offsets for link symbols + instead of absolute values. So bss_start is obtained using an + offset _bss_start_ofs from CONFIG_SYS_TEXT_BASE, rather than + directly. You should not need to touch this setting. +
The following definitions that deal with the placement and management of environment data (variable area); in general, we support the diff --git a/common/board_f.c b/common/board_f.c index 94f316c..2aa2cf1 100644 --- a/common/board_f.c +++ b/common/board_f.c @@ -108,8 +108,13 @@ static int display_text_info(void) { ulong bss_start, bss_end;
+#ifdef CONFIG_SYS_SYM_OFFSETS bss_start = _bss_start_ofs + _TEXT_BASE; bss_end = _bss_end_ofs + _TEXT_BASE; +#else + bss_start = (ulong)&__bss_start; + bss_end = (ulong)&__bss_end; +#endif debug("U-Boot code: %08X -> %08lX BSS: -> %08lX\n", CONFIG_SYS_TEXT_BASE, bss_start, bss_end);
@@ -186,7 +191,11 @@ static int zero_global_data(void)
static int setup_mon_len(void) { +#ifdef CONFIG_SYS_SYM_OFFSETS gd->mon_len = _bss_end_ofs; +#else + gd->mon_len = (ulong)&__bss_end - (ulong)&__text_start; +#endif return 0; }
@@ -423,6 +432,7 @@ static int jump_to_copy(void)
static init_fnc_t init_sequence_f[] = { setup_global_data_ptr, + zero_global_data, setup_fdt, setup_mon_len, #if defined(CONFIG_ARCH_CPU_INIT) @@ -457,6 +467,7 @@ static init_fnc_t init_sequence_f[] = { #ifdef CONFIG_POST init_post, #endif + setup_dram_config, setup_reloc, #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR) reserve_logbuffer,