Add support for specifying a different CPU for main u-boot and SPL u-boot builds. This is done by adding an optional SPL CPU after the main CPU in boards.cfg as follows:
normal_cpu:spl_cpu
This this case CPU will be set to "normal_cpu" during the main u-boot build and "spl_cpu" during the SPL build.
Signed-off-by: Allen Martin amartin@nvidia.com --- boards.cfg | 5 +++++ doc/README.SPL | 12 ++++++++++++ mkconfig | 13 +++++++++++-- 3 files changed, 28 insertions(+), 2 deletions(-)
diff --git a/boards.cfg b/boards.cfg index f7f1190..8958ba2 100644 --- a/boards.cfg +++ b/boards.cfg @@ -11,6 +11,11 @@ # Lines starting with '#' are comments. # Blank lines are ignored. # +# The CPU field takes the form: +# cpu[:spl_cpu] +# If spl_cpu is specified the make variable CPU will be set to this +# during the SPL build. +# # The options field takes the form: # <board config name>[:comma separated config options] # Each config option has the form (value defaults to "1"): diff --git a/doc/README.SPL b/doc/README.SPL index 0276953..e4a5ac3 100644 --- a/doc/README.SPL +++ b/doc/README.SPL @@ -66,3 +66,15 @@ CONFIG_SPL_DMA_SUPPORT (drivers/dma/libdma.o) CONFIG_SPL_POST_MEM_SUPPORT (post/drivers/memory.o) CONFIG_SPL_NAND_LOAD (drivers/mtd/nand/nand_spl_load.o) CONFIG_SPL_SPI_LOAD (drivers/mtd/spi/spi_spl_load.o) + + +Normally CPU is assumed to be the same between the SPL and normal +u-boot build. However it is possible to specify a different CPU for +the SPL build for cases where the SPL is expected to run on a +different CPU model from the main u-boot. This is done by specifying +an SPL CPU in boards.cfg as follows: + + normal_cpu:spl_cpu + +This this case CPU will be set to "normal_cpu" during the main u-boot +build and "spl_cpu" during the SPL build. diff --git a/mkconfig b/mkconfig index 3e9c695..66d3da5 100755 --- a/mkconfig +++ b/mkconfig @@ -59,7 +59,8 @@ CONFIG_NAME="${1%_config}" [ "${BOARD_NAME}" ] || BOARD_NAME="${1%_config}"
arch="$2" -cpu="$3" +cpu=`echo $3 | awk 'BEGIN {FS = ":"} ; {print $1}'` +spl_cpu=`echo $3 | awk 'BEGIN {FS = ":"} ; {print $2}'` if [ "$4" = "-" ] ; then board=${BOARD_NAME} else @@ -131,7 +132,15 @@ fi # Create include file for Make # echo "ARCH = ${arch}" > config.mk -echo "CPU = ${cpu}" >> config.mk +if [ ! -z "$spl_cpu" ] ; then + echo 'ifeq ($(CONFIG_SPL_BUILD),y)' >> config.mk + echo "CPU = ${spl_cpu}" >> config.mk + echo "else" >> config.mk + echo "CPU = ${cpu}" >> config.mk + echo "endif" >> config.mk +else + echo "CPU = ${cpu}" >> config.mk +fi echo "BOARD = ${board}" >> config.mk
[ "${vendor}" ] && echo "VENDOR = ${vendor}" >> config.mk