rpi: move plat_helpers.S to common
The plat_helpers.S file was almost identical between its RPi3 and RPi4
versions. Unify the two files, moving it into the common/ directory.
This adds a plat_rpi_get_model() function, which can be used to trigger
RPi4 specific action, detected at runtime. We use that to do the RPi4
specific L2 cache initialisation.
Change-Id: I2295704fd6dde7c76fe83b6d98c7bf998d4bf074
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/plat/rpi/rpi3/platform.mk b/plat/rpi/rpi3/platform.mk
index a5b8904..bcfc34e 100644
--- a/plat/rpi/rpi3/platform.mk
+++ b/plat/rpi/rpi3/platform.mk
@@ -15,6 +15,7 @@
drivers/gpio/gpio.c \
drivers/delay_timer/delay_timer.c \
drivers/rpi3/gpio/rpi3_gpio.c \
+ plat/rpi/common/aarch64/plat_helpers.S \
plat/rpi/common/rpi3_common.c \
${XLAT_TABLES_LIB_SRCS}
@@ -23,7 +24,6 @@
drivers/io/io_storage.c \
lib/cpus/aarch64/cortex_a53.S \
plat/common/aarch64/platform_mp_stack.S \
- plat/rpi/rpi3/aarch64/plat_helpers.S \
plat/rpi/rpi3/rpi3_bl1_setup.c \
plat/rpi/common/rpi3_io_storage.c \
drivers/rpi3/mailbox/rpi3_mbox.c \
@@ -38,7 +38,6 @@
drivers/mmc/mmc.c \
drivers/rpi3/sdhost/rpi3_sdhost.c \
plat/common/aarch64/platform_mp_stack.S \
- plat/rpi/rpi3/aarch64/plat_helpers.S \
plat/rpi/rpi3/aarch64/rpi3_bl2_mem_params_desc.c \
plat/rpi/rpi3/rpi3_bl2_setup.c \
plat/rpi/common/rpi3_image_load.c \
@@ -46,7 +45,6 @@
BL31_SOURCES += lib/cpus/aarch64/cortex_a53.S \
plat/common/plat_psci_common.c \
- plat/rpi/rpi3/aarch64/plat_helpers.S \
plat/rpi/rpi3/rpi3_bl31_setup.c \
plat/rpi/common/rpi3_pm.c \
plat/rpi/common/rpi3_topology.c \