[LEDE-DEV] [PATCH] ar71xx: disable devicetree support
Matthias Schiffer
mschiffer at universe-factory.net
Wed Jan 10 15:52:32 PST 2018
While we'd like to convert ar71xx to DT-based configuration
eventually, we aren't quite there yet, and shipping half-baked DT support
that is not used at all wastes precious space.
Saves ~120KB before LZMA, ~33KB after LZMA.
Run-tested on TP-Link CPE510 and TL-WR841 v7.
Signed-off-by: Matthias Schiffer <mschiffer at universe-factory.net>
---
target/linux/ar71xx/config-4.9 | 21 +------
.../ar71xx/patches-4.9/604-MIPS-ath79-no-of.patch | 70 ++++++++++++++++++++++
...20-MIPS-ath79-add-support-for-QCA953x-SoC.patch | 4 +-
...21-MIPS-ath79-add-support-for-QCA956x-SoC.patch | 4 +-
4 files changed, 75 insertions(+), 24 deletions(-)
create mode 100644 target/linux/ar71xx/patches-4.9/604-MIPS-ath79-no-of.patch
diff --git a/target/linux/ar71xx/config-4.9 b/target/linux/ar71xx/config-4.9
index 4334d25b80..1b9b971688 100644
--- a/target/linux/ar71xx/config-4.9
+++ b/target/linux/ar71xx/config-4.9
@@ -284,7 +284,6 @@ CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_WORKQUEUE=y
CONFIG_CSRC_R4K=y
CONFIG_DMA_NONCOHERENT=y
-CONFIG_DTC=y
CONFIG_EARLY_PRINTK=y
CONFIG_ETHERNET_PACKET_MANGLE=y
CONFIG_FIXED_PHY=y
@@ -360,14 +359,12 @@ CONFIG_INITRAMFS_ROOT_UID=0
CONFIG_INITRAMFS_SOURCE="../../root"
CONFIG_INTEL_XWAY_PHY=y
CONFIG_IP17XX_PHY=y
-CONFIG_IRQCHIP=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_IRQ_MIPS_CPU=y
CONFIG_IRQ_WORK=y
CONFIG_LEDS_GPIO=y
# CONFIG_LEDS_WNDR3700_USB is not set
-CONFIG_LIBFDT=y
CONFIG_MARVELL_PHY=y
CONFIG_MDIO_BITBANG=y
CONFIG_MDIO_BOARDINFO=y
@@ -378,15 +375,10 @@ CONFIG_MIPS_ASID_BITS=8
CONFIG_MIPS_ASID_SHIFT=0
CONFIG_MIPS_CLOCK_VSYSCALL=y
# CONFIG_MIPS_CMDLINE_BUILTIN_EXTEND is not set
-# CONFIG_MIPS_CMDLINE_DTB_EXTEND is not set
CONFIG_MIPS_CMDLINE_FROM_BOOTLOADER=y
-# CONFIG_MIPS_CMDLINE_FROM_DTB is not set
-# CONFIG_MIPS_ELF_APPENDED_DTB is not set
# CONFIG_MIPS_HUGE_TLB_SUPPORT is not set
CONFIG_MIPS_L1_CACHE_SHIFT=5
CONFIG_MIPS_MACHINE=y
-CONFIG_MIPS_NO_APPENDED_DTB=y
-# CONFIG_MIPS_RAW_APPENDED_DTB is not set
CONFIG_MIPS_SPRAM=y
CONFIG_MODULES_USE_ELF_REL=y
CONFIG_MTD_CFI_ADV_OPTIONS=y
@@ -422,17 +414,7 @@ CONFIG_NET_DSA_TAG_TRAILER=y
CONFIG_NET_SWITCHDEV=y
CONFIG_NO_GENERIC_PCI_IOPORT_MAP=y
# CONFIG_NO_IOPORT_MAP is not set
-CONFIG_OF=y
-CONFIG_OF_ADDRESS=y
-CONFIG_OF_ADDRESS_PCI=y
-CONFIG_OF_EARLY_FLATTREE=y
-CONFIG_OF_FLATTREE=y
-CONFIG_OF_GPIO=y
-CONFIG_OF_IRQ=y
-CONFIG_OF_MDIO=y
-CONFIG_OF_NET=y
-CONFIG_OF_PCI=y
-CONFIG_OF_PCI_IRQ=y
+# CONFIG_OF is not set
CONFIG_PCI=y
CONFIG_PCI_AR724X=y
CONFIG_PCI_DISABLE_COMMON_QUIRKS=y
@@ -486,4 +468,3 @@ CONFIG_SYS_SUPPORTS_ZBOOT=y
CONFIG_SYS_SUPPORTS_ZBOOT_UART_PROM=y
CONFIG_TICK_CPU_ACCOUNTING=y
CONFIG_USB_SUPPORT=y
-CONFIG_USE_OF=y
diff --git a/target/linux/ar71xx/patches-4.9/604-MIPS-ath79-no-of.patch b/target/linux/ar71xx/patches-4.9/604-MIPS-ath79-no-of.patch
new file mode 100644
index 0000000000..c0b5459e45
--- /dev/null
+++ b/target/linux/ar71xx/patches-4.9/604-MIPS-ath79-no-of.patch
@@ -0,0 +1,70 @@
+--- a/arch/mips/Kconfig
++++ b/arch/mips/Kconfig
+@@ -195,7 +195,6 @@ config ATH79
+ select SYS_SUPPORTS_BIG_ENDIAN
+ select SYS_SUPPORTS_MIPS16
+ select SYS_SUPPORTS_ZBOOT_UART_PROM
+- select USE_OF
+ help
+ Support for the Atheros AR71XX/AR724X/AR913X SoCs.
+
+--- a/arch/mips/ath79/setup.c
++++ b/arch/mips/ath79/setup.c
+@@ -196,16 +196,20 @@ unsigned int get_c0_compare_int(void)
+
+ void __init plat_mem_setup(void)
+ {
++#ifdef CONFIG_OF
+ unsigned long fdt_start;
++#endif
+
+ set_io_port_base(KSEG1);
+
++#ifdef CONFIG_OF
+ /* Get the position of the FDT passed by the bootloader */
+ fdt_start = fw_getenvl("fdt_start");
+ if (fdt_start)
+ __dt_setup_arch((void *)KSEG0ADDR(fdt_start));
+ else if (fw_passed_dtb)
+ __dt_setup_arch((void *)KSEG0ADDR(fw_passed_dtb));
++#endif
+
+ if (mips_machtype != ATH79_MACH_GENERIC_OF) {
+ ath79_reset_base = ioremap_nocache(AR71XX_RESET_BASE,
+@@ -301,17 +305,21 @@ static int __init ath79_setup(void)
+
+ arch_initcall(ath79_setup);
+
++#ifdef CONFIG_OF
+ void __init device_tree_init(void)
+ {
+ unflatten_and_copy_device_tree();
+ }
++#endif
+
+ MIPS_MACHINE(ATH79_MACH_GENERIC,
+ "Generic",
+ "Generic AR71XX/AR724X/AR913X based board",
+ NULL);
+
++#ifdef CONFIG_OF
+ MIPS_MACHINE(ATH79_MACH_GENERIC_OF,
+ "DTB",
+ "Generic AR71XX/AR724X/AR913X based board (DT)",
+ NULL);
++#endif
+--- a/arch/mips/ath79/clock.c
++++ b/arch/mips/ath79/clock.c
+@@ -33,10 +33,12 @@
+ #define AR724X_BASE_FREQ 40000000
+
+ static struct clk *clks[ATH79_CLK_END];
++#ifdef CONFIG_OF
+ static struct clk_onecell_data clk_data = {
+ .clks = clks,
+ .clk_num = ARRAY_SIZE(clks),
+ };
++#endif
+
+ static struct clk *__init ath79_add_sys_clkdev(
+ const char *id, unsigned long rate)
diff --git a/target/linux/ar71xx/patches-4.9/620-MIPS-ath79-add-support-for-QCA953x-SoC.patch b/target/linux/ar71xx/patches-4.9/620-MIPS-ath79-add-support-for-QCA953x-SoC.patch
index 869fdd6dd0..03ff6c6aac 100644
--- a/target/linux/ar71xx/patches-4.9/620-MIPS-ath79-add-support-for-QCA953x-SoC.patch
+++ b/target/linux/ar71xx/patches-4.9/620-MIPS-ath79-add-support-for-QCA953x-SoC.patch
@@ -44,7 +44,7 @@ meaning of the bits CPUCLK_FROM_CPUPLL and DDRCLK_FROM_DDRPLL is reversed.
config ATH79_NVRAM
--- a/arch/mips/ath79/clock.c
+++ b/arch/mips/ath79/clock.c
-@@ -356,6 +356,91 @@ static void __init ar934x_clocks_init(vo
+@@ -358,6 +358,91 @@ static void __init ar934x_clocks_init(vo
iounmap(dpll_base);
}
@@ -136,7 +136,7 @@ meaning of the bits CPUCLK_FROM_CPUPLL and DDRCLK_FROM_DDRPLL is reversed.
static void __init qca955x_clocks_init(void)
{
unsigned long ref_rate;
-@@ -451,6 +536,8 @@ void __init ath79_clocks_init(void)
+@@ -453,6 +538,8 @@ void __init ath79_clocks_init(void)
ar933x_clocks_init();
else if (soc_is_ar934x())
ar934x_clocks_init();
diff --git a/target/linux/ar71xx/patches-4.9/621-MIPS-ath79-add-support-for-QCA956x-SoC.patch b/target/linux/ar71xx/patches-4.9/621-MIPS-ath79-add-support-for-QCA956x-SoC.patch
index dafac99190..e6eaa7123a 100644
--- a/target/linux/ar71xx/patches-4.9/621-MIPS-ath79-add-support-for-QCA956x-SoC.patch
+++ b/target/linux/ar71xx/patches-4.9/621-MIPS-ath79-add-support-for-QCA956x-SoC.patch
@@ -24,7 +24,7 @@
config ATH79_NVRAM
--- a/arch/mips/ath79/clock.c
+++ b/arch/mips/ath79/clock.c
-@@ -526,6 +526,100 @@ static void __init qca955x_clocks_init(v
+@@ -528,6 +528,100 @@ static void __init qca955x_clocks_init(v
clk_add_alias("uart", NULL, "ref", NULL);
}
@@ -125,7 +125,7 @@
void __init ath79_clocks_init(void)
{
if (soc_is_ar71xx())
-@@ -540,6 +634,8 @@ void __init ath79_clocks_init(void)
+@@ -542,6 +636,8 @@ void __init ath79_clocks_init(void)
qca953x_clocks_init();
else if (soc_is_qca955x())
qca955x_clocks_init();
--
2.15.1
More information about the Lede-dev
mailing list