[U-Boot] [PATCH v3 61/66] spl: support TPL_STACK, TPL_MAX_SIZE and TPL_TEXT_BASE via Kconfig

Philipp Tomsich
2017-07-28T19:22:33Z

Let's clean up behind ourselves and move the (newly defined)
TPL_STACK, TPL_MAX_SIZE and TPL_TEXT_BASE into Kconfig. Given that
0x0 might be considered to be valid values for TPL_TEXT_BASE and
TPL_STACK, we need to introduce helper config options
("TPL_NEEDS_SEPARATE_...") to indicate that these symbols are used
(and not inherited from their SPL variants) for any given
target-platform.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

---

Changes in v3:
- moves TPL_STACK, TPL_MAX_SIZE and TPL_TEXT_BASE to Kconfig

Changes in v2: None

common/spl/Kconfig | 39 +++++++++++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)

diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index b01d4f1..08013b7 100644
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -725,6 +725,45 @@ config TPL_LDSCRIPT
U-Boot stage. Set this to the path of the linker-script to
be used for TPL.

+ May be left empty to trigger the Makefile infrastructure to
+ fall back to the linker-script used for the SPL stage.
+
+config TPL_NEEDS_SEPARATE_TEXT_BASE
+ bool "TPL needs a separate text-base"
+ default n
+ depends on TPL
+ help
+ Enable, if the TPL stage should not inherit its text-base
+ from the SPL stage. When enabled, a base address for the
+ .text sections of the TPL stage has to be set below.
+
+config TPL_NEEDS_SEPARATE_STACK
+ bool "TPL needs a separate initial stack-pointer"
+ default n
+ depends on TPL
+ help
+ Enable, if the TPL stage should not inherit its initial
+ stack-pointer from the settings for the SPL stage.
+
+config TPL_TEXT_BASE
+ hex "Base address for the .text section of the TPL stage"
+ depends on TPL_NEEDS_SEPARATE_TEXT_BASE
+ help
+ The base address for the .text section of the TPL stage.
+
+config TPL_MAX_SIZE
+ int "Maximum size (in bytes) for the TPL stage"
+ depends on TPL
+ help
+ The maximum size (in bytes) of the TPL stage.
+
+config TPL_STACK
+ hex "Address of the initial stack-pointer for the TPL stage"
+ depends on TPL_NEEDS_SEPARATE_STACK
+ help
+ The address of the initial stack-pointer for the TPL stage.
+ Usually this will be the (aligned) top-of-stack.
+
config TPL_BOOTROM_SUPPORT
bool "Support returning to the BOOTROM (from TPL)"
help
--
2.1.4