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author | Simon Glass <sjg@chromium.org> | 2022-04-30 00:56:45 -0600 |
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committer | Tom Rini <trini@konsulko.com> | 2022-05-02 09:58:13 -0400 |
commit | d411359d919a7efae5e9379b83986c553bc57b34 (patch) | |
tree | 2dea42b2e011a5cea202a6be4c6582589f4c3984 /doc | |
parent | c70c0102af5413cadde6bf90044cb75aefef0584 (diff) | |
download | u-boot-d411359d919a7efae5e9379b83986c553bc57b34.zip u-boot-d411359d919a7efae5e9379b83986c553bc57b34.tar.gz u-boot-d411359d919a7efae5e9379b83986c553bc57b34.tar.bz2 |
doc: Convert SPL documentation to ReST
Move this documentation over to .rst format.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'doc')
-rw-r--r-- | doc/develop/index.rst | 1 | ||||
-rw-r--r-- | doc/develop/spl.rst (renamed from doc/README.SPL) | 36 |
2 files changed, 20 insertions, 17 deletions
diff --git a/doc/develop/index.rst b/doc/develop/index.rst index d32ec49..fe3564a 100644 --- a/doc/develop/index.rst +++ b/doc/develop/index.rst @@ -25,6 +25,7 @@ Implementation menus printf smbios + spl uefi/index version diff --git a/doc/README.SPL b/doc/develop/spl.rst index 011fd42..4d6f394 100644 --- a/doc/README.SPL +++ b/doc/develop/spl.rst @@ -20,19 +20,19 @@ u-boot-spl.map. A config option named CONFIG_SPL_BUILD is enabled by Kconfig for SPL. Source files can therefore be compiled for SPL with different settings. -For example: +For example:: -ifeq ($(CONFIG_SPL_BUILD),y) -obj-y += board_spl.o -else -obj-y += board.o -endif + ifeq ($(CONFIG_SPL_BUILD),y) + obj-y += board_spl.o + else + obj-y += board.o + endif -obj-$(CONFIG_SPL_BUILD) += foo.o + obj-$(CONFIG_SPL_BUILD) += foo.o -#ifdef CONFIG_SPL_BUILD - foo(); -#endif + #ifdef CONFIG_SPL_BUILD + foo(); + #endif The building of SPL images can be enabled by CONFIG_SPL option in Kconfig. @@ -71,11 +71,13 @@ Device tree The U-Boot device tree is filtered by the fdtgrep tools during the build process to generate a much smaller device tree used in SPL (spl/u-boot-spl.dtb) with: + - the mandatory nodes (/alias, /chosen, /config) - the nodes with one pre-relocation property: 'u-boot,dm-pre-reloc' or 'u-boot,dm-spl' fdtgrep is also used to remove: + - the properties defined in CONFIG_OF_SPL_REMOVE_PROPS - all the pre-relocation properties ('u-boot,dm-pre-reloc', 'u-boot,dm-spl' and 'u-boot,dm-tpl') @@ -98,14 +100,14 @@ stack usage at various points in run sequence of SPL. The -fstack-usage option to gcc will produce '.su' files (such as arch/arm/cpu/armv7/syslib.su) that will give stack usage information and cflow can construct program flow. -Must have gcc 4.6 or later, which supports -fstack-usage +Must have gcc 4.6 or later, which supports -fstack-usage: -1) Build normally -2) Perform the following shell command to generate a list of C files used in -SPL: -$ find spl -name '*.su' | sed -e 's:^spl/::' -e 's:[.]su$:.c:' > used-spl.list -3) Execute cflow: -$ cflow --main=board_init_r `cat used-spl.list` 2>&1 | $PAGER +#. Build normally +#. Perform the following shell command to generate a list of C files used in + SPL: +#. `find spl -name '*.su' | sed -e 's:^spl/::' -e 's:[.]su$:.c:' > used-spl.list` +#. Execute cflow: + `$ cflow --main=board_init_r $(cat used-spl.list) 2>&1 | $PAGER` cflow will spit out a number of warnings as it does not parse the config files and picks functions based on #ifdef. Parsing the '.i' |