[PATCH 2/8] MIPS: boot: Support specifying UART port on Ingenic SoCs
From: Paul Cercueil <paul@crapouillou.net>
Date: 2021-05-30 17:18:34
Also in:
linux-mips, lkml
Subsystem:
mips, the rest · Maintainers:
Thomas Bogendoerfer, Linus Torvalds
Allow specifying from the config the UART to use on Ingenic SoCs when compressed kernel debugging is enabled. Signed-off-by: Paul Cercueil <paul@crapouillou.net> --- arch/mips/Kconfig.debug | 8 ++++++++ arch/mips/boot/compressed/uart-16550.c | 4 ++-- 2 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/arch/mips/Kconfig.debug b/arch/mips/Kconfig.debug
index f5832a49a881..43dbf5930796 100644
--- a/arch/mips/Kconfig.debug
+++ b/arch/mips/Kconfig.debug@@ -102,6 +102,14 @@ config DEBUG_ZBOOT to reduce the kernel image size and speed up the booting procedure a little. +config ZBOOT_INGENIC_UART + int "UART to use for compressed kernel debugging" + depends on DEBUG_ZBOOT && MACH_INGENIC_SOC + default 0 + range 0 4 + help + Specify the UART that should be used for compressed kernel debugging. + config SPINLOCK_TEST bool "Enable spinlock timing tests in debugfs" depends on DEBUG_FS
diff --git a/arch/mips/boot/compressed/uart-16550.c b/arch/mips/boot/compressed/uart-16550.c
index aee8d7b8f091..c18d7f72d9d9 100644
--- a/arch/mips/boot/compressed/uart-16550.c
+++ b/arch/mips/boot/compressed/uart-16550.c@@ -19,8 +19,8 @@ #endif #ifdef CONFIG_MACH_INGENIC -#define INGENIC_UART0_BASE_ADDR 0x10030000 -#define PORT(offset) (CKSEG1ADDR(INGENIC_UART0_BASE_ADDR) + (4 * offset)) +#define INGENIC_UART_BASE_ADDR (0x10030000 + 0x1000 * CONFIG_ZBOOT_INGENIC_UART) +#define PORT(offset) (CKSEG1ADDR(INGENIC_UART_BASE_ADDR) + (4 * offset)) #endif #ifdef CONFIG_CPU_XLR
--
2.30.2