x86: Add an option to control the position of U-Boot
The existing work-around for positioning U-Boot in the ROM when it
actually runs from RAM still exists and there is not obvious way to change
this.
Add a proper Kconfig option to handle this case. This also adds a new bool
property to indicate whether CONFIG_SYS_TEXT_BASE exists.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/x86/dts/u-boot.dtsi b/arch/x86/dts/u-boot.dtsi
index 14e3c13..d84c648 100644
--- a/arch/x86/dts/u-boot.dtsi
+++ b/arch/x86/dts/u-boot.dtsi
@@ -50,7 +50,7 @@
u-boot-spl-dtb {
};
u-boot {
- offset = <CONFIG_SYS_TEXT_BASE>;
+ offset = <CONFIG_X86_OFFSET_U_BOOT>;
};
#elif defined(CONFIG_SPL)
u-boot-spl-with-ucode-ptr {
@@ -60,23 +60,11 @@
type = "u-boot-dtb-with-ucode";
};
u-boot {
- /*
- * TODO(sjg@chromium.org):
- * Normally we use CONFIG_SYS_TEXT_BASE as the flash offset. But
- * for boards with textbase in SDRAM we cannot do this. Just use
- * an assumed-valid value (1MB before the end of flash) here so
- * that we can actually build an image for coreboot, etc.
- * We need a better solution, perhaps a separate Kconfig.
- */
-#if CONFIG_SYS_TEXT_BASE == 0x1110000
- offset = <0xfff00000>;
-#else
- offset = <CONFIG_SYS_TEXT_BASE>;
-#endif
+ offset = <CONFIG_X86_OFFSET_U_BOOT>;
};
#else
u-boot-with-ucode-ptr {
- offset = <CONFIG_SYS_TEXT_BASE>;
+ offset = <CONFIG_X86_OFFSET_U_BOOT>;
};
#endif
#ifdef CONFIG_HAVE_MICROCODE