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serial: stm32: restrict _debug_uart_init() usage

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Since commit 948da7773e ("arm: Add new config option ARCH_VERY_EARLY_INIT")
debug_uart_init() is called respectively in crt0.S and crt0_64.S.
That means that _debug_uart_init() is called for all STM32MP platforms
even for those which doesn't support SPL_BUILD.

So restrict _debug_uart_init() execution for platforms which can have
SPL_BUILD enabled (STM32MP1 platform only).

It's more needed to call debug_uart_init() in stm32mp1/cpu.c.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
This commit is contained in:
Patrice Chotard
2025-01-30 12:57:54 +01:00
parent 2cc38eb83c
commit 1a87755ecd
2 changed files with 12 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/mach-stm32mp/stm32mp1/cpu.c
View File

@@ -138,8 +138,6 @@ int mach_cpu_init(void)
if (IS_ENABLED(CONFIG_CMD_STM32PROG_SERIAL) &&
(boot_mode & TAMP_BOOT_DEVICE_MASK) == BOOT_SERIAL_UART)
gd->flags |= GD_FLG_SILENT | GD_FLG_DISABLE_CONSOLE;
else if (IS_ENABLED(CONFIG_DEBUG_UART) && IS_ENABLED(CONFIG_XPL_BUILD))
debug_uart_init();
return 0;
}

10
drivers/serial/serial_stm32.c
View File

@@ -299,13 +299,19 @@ static inline struct stm32_uart_info *_debug_uart_info(void)
static inline void _debug_uart_init(void)
{
void __iomem *base = (void __iomem *)CONFIG_VAL(DEBUG_UART_BASE);
struct stm32_uart_info *uart_info = _debug_uart_info();
void __maybe_unused __iomem *base = (void __iomem *)CONFIG_VAL(DEBUG_UART_BASE);
struct stm32_uart_info *uart_info __maybe_unused = _debug_uart_info();
/*
* debug_uart_init() is only usable when SPL_BUILD is enabled
* (STM32MP1 case only)
*/
if (IS_ENABLED(CONFIG_DEBUG_UART) && IS_ENABLED(CONFIG_SPL_BUILD)) {
_stm32_serial_init(base, uart_info);
_stm32_serial_setbrg(base, uart_info,
CONFIG_DEBUG_UART_CLOCK,
CONFIG_BAUDRATE);
}
}
static inline void _debug_uart_putc(int c)