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MIPS: boot: Support specifying UART port on Ingenic SoCs

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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>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This commit is contained in:
Paul Cercueil 2021-05-30 18:17:56 +01:00 • committed by Thomas Bogendoerfer
parent 1660710cf5
commit f92a05b9c0
2 changed files with 10 additions and 2 deletions
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8
arch/mips/Kconfig.debug
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@ -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

4
arch/mips/boot/compressed/uart-16550.c
View file

@ -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