mach-snapdragon: generalise board support
Historically, Qualcomm boards have relied on heavy hardcoding in U-Boot,
in many cases to the specific SoC but also to the board itself (e.g.
memory map). This has been largely resolved by modernising the Qualcomm
drivers in U-Boot, however the board code still largely follows this
model.
This patch removes the board specific memory maps and duplicated board
init code, replacing it with generic init code.
The memory map is now built at runtime based on data read from DT, this
allows for the memory map to be provided without having to recompile
U-Boot. Support is also added for booting with appended DTBs, so that
the first-stage bootloader can populate the memory map for us.
The sdm845 specific init code is dropped entirely, it set an environment
variable depending on if a button was pressed, but this variable wasn't
used in U-Boot, and could be written to use the button command instead.
The KASLR detection is also dropped as with appended dtb, the kaslr seed
can be read directly from the DTB passed to U-Boot.
A new qcom_defconfig is added, with the aim of providing a generic
U-Boot configuration that will work on as many Qualcomm boards as
possible. It replaces the defconfig files for the Dragonboard 845c,
Galaxy S9, and QCS404 EVB. For now the db410c and 820c are excluded as
they still have some board code left.
Similarly, the config headers for db845c, starqltechn, and qcs404-evb
are replaced by a single qcom header.
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
diff --git a/configs/dragonboard410c_chainloaded_defconfig b/configs/dragonboard410c_chainloaded_defconfig
index d6860f5..a114d82 100644
--- a/configs/dragonboard410c_chainloaded_defconfig
+++ b/configs/dragonboard410c_chainloaded_defconfig
@@ -1,17 +1,15 @@
CONFIG_ARM=y
+CONFIG_SYS_BOARD="dragonboard410c"
CONFIG_COUNTER_FREQUENCY=19000000
-CONFIG_ARCH_SNAPDRAGON=y
-CONFIG_TARGET_QCOM=y
CONFIG_POSITION_INDEPENDENT=y
+CONFIG_ARCH_SNAPDRAGON=y
CONFIG_SYS_MALLOC_LEN=0x802000
CONFIG_ENV_SIZE=0x2000
CONFIG_ENV_OFFSET=0x0
CONFIG_DEFAULT_DEVICE_TREE="dragonboard410c"
-CONFIG_SYS_BOARD="dragonboard410c"
CONFIG_OF_LIBFDT_OVERLAY=y
CONFIG_IDENT_STRING="\nQualcomm-DragonBoard 410C"
CONFIG_SYS_LOAD_ADDR=0x80080000
-CONFIG_REMAKE_ELF=y
# CONFIG_ANDROID_BOOT_IMAGE is not set
CONFIG_FIT=y
CONFIG_DISTRO_DEFAULTS=y
@@ -20,7 +18,6 @@
# CONFIG_DISPLAY_CPUINFO is not set
# CONFIG_DISPLAY_BOARDINFO is not set
CONFIG_MISC_INIT_R=y
-CONFIG_LINUX_KERNEL_IMAGE_HEADER=y
CONFIG_SYS_PROMPT="dragonboard410c => "
CONFIG_SYS_MAXARGS=64
CONFIG_SYS_CBSIZE=512
@@ -38,6 +35,7 @@
CONFIG_ENV_IS_IN_MMC=y
CONFIG_SYS_RELOC_GD_ENV_ADDR=y
CONFIG_SYS_MMC_ENV_PART=2
+CONFIG_BUTTON_QCOM_PMIC=y
CONFIG_CLK=y
CONFIG_CLK_QCOM_APQ8016=y
CONFIG_USB_FUNCTION_FASTBOOT=y
@@ -52,13 +50,12 @@
CONFIG_MMC_SDHCI_MSM=y
CONFIG_PHY=y
CONFIG_PINCTRL=y
-CONFIG_PINCTRL_QCOM_APQ8016=y
CONFIG_PINCONF=y
+CONFIG_PINCTRL_QCOM_APQ8016=y
CONFIG_DM_PMIC=y
CONFIG_PMIC_QCOM=y
CONFIG_MSM_SERIAL=y
CONFIG_SPMI_MSM=y
-CONFIG_BUTTON_QCOM_PMIC=y
CONFIG_USB=y
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_MSM=y