Hi Simon,
On Wed, Nov 12, 2014 at 8:17 AM, Simon Glass <s...@chromium.org> wrote:
> Define the reset base in config.mk so that it does not need to be calculated
> twice in the link script. Also tidy up the START_16 and RESET_VEC_LOC values
> to fit with this new approach.
>
> Signed-off-by: Simon Glass <s...@chromium.org>
> ---
>
> arch/x86/cpu/config.mk | 5 +++--
> arch/x86/cpu/u-boot.lds | 13 +++++++++----
> 2 files changed, 12 insertions(+), 6 deletions(-)
>
> diff --git a/arch/x86/cpu/config.mk b/arch/x86/cpu/config.mk
> index f7b01d3..84aeaf3 100644
> --- a/arch/x86/cpu/config.mk
> +++ b/arch/x86/cpu/config.mk
> @@ -12,5 +12,6 @@ PLATFORM_CPPFLAGS += -D__I386__ -Werror
> # DO NOT MODIFY THE FOLLOWING UNLESS YOU REALLY KNOW WHAT YOU ARE DOING!
> LDPPFLAGS += -DRESET_SEG_START=0xffff0000
> LDPPFLAGS += -DRESET_SEG_SIZE=0x10000
> -LDPPFLAGS += -DRESET_VEC_LOC=0xfff0
> -LDPPFLAGS += -DSTART_16=0xf800
> +LDPPFLAGS += -DRESET_VEC_LOC=0xfffffff0
> +LDPPFLAGS += -DSTART_16=$(CONFIG_SYS_X86_START16)
> +LDPPFLAGS += -DRESET_BASE="CONFIG_SYS_TEXT_BASE + (CONFIG_SYS_MONITOR_LEN -
> RESET_SEG_SIZE)"
> diff --git a/arch/x86/cpu/u-boot.lds b/arch/x86/cpu/u-boot.lds
> index 95ab7dd..2a23e18 100644
> --- a/arch/x86/cpu/u-boot.lds
> +++ b/arch/x86/cpu/u-boot.lds
> @@ -71,10 +71,15 @@ SECTIONS
> * The following expressions place the 16-bit Real-Mode code and
> * Reset Vector at the end of the Flash ROM
> */
> - . = START_16;
> - .start16 : AT (CONFIG_SYS_TEXT_BASE + (CONFIG_SYS_MONITOR_LEN -
> RESET_SEG_SIZE + START_16)) { KEEP(*(.start16)); }
> + . = START_16 - RESET_SEG_START;
> + .start16 : AT (START_16 - RESET_SEG_START) {
> + KEEP(*(.start16));
> + }
What's the reason of changing AT of .start16 section?
> - . = RESET_VEC_LOC;
> - .resetvec : AT (CONFIG_SYS_TEXT_BASE + (CONFIG_SYS_MONITOR_LEN -
> RESET_SEG_SIZE + RESET_VEC_LOC)) { KEEP(*(.resetvec)); }
> + . = RESET_VEC_LOC - RESET_SEG_START;
> + .resetvec : AT (RESET_VEC_LOC - RESET_SEG_START) {
> + KEEP(*(.resetvec));
> + }
Ditto.
> #endif
> +
> }
> --
Regards,
Bin
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