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sunxi: move non-essential code out of s_init()

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So far all Allwinner based boards were doing some not-so-lowlevel-setup
in lowlevel's s_init() routine.
This includes the initial clock, timer and pinmux setup, among other
things. This is clearly out of the "absolute bare minimum to get started"
scope that lowlevel_init.S suggests for this function.

Since we have an SPL, which is called right after s_init(), move those
calls to our board_init_f() function. As we overwrite this only for
the SPL, this has the added benefit of not doing this setup *again*
shortly afterwards, when running U-Boot proper.

This makes gpio_init() to be called from the SPL only, so pull this code
into a CONFIG_SPL_BUILD protected part to avoid build warnings.

Reviewed-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
This commit is contained in:
Andre Przywara 2022-01-22 10:05:12 +00:00
parent 006fddde01
commit 5bc4cd05d7
1 changed files with 12 additions and 13 deletions
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25
arch/arm/mach-sunxi/board.c
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@ -75,6 +75,7 @@ ulong board_get_usable_ram_top(ulong total_size)
}
#endif
#ifdef CONFIG_SPL_BUILD
static int gpio_init(void)
{
__maybe_unused uint val;
@ -172,7 +173,6 @@ static int gpio_init(void)
return 0;
}
#if defined(CONFIG_SPL_BOARD_LOAD_IMAGE) && defined(CONFIG_SPL_BUILD)
static int spl_board_load_image(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev)
{
@ -227,18 +227,6 @@ void s_init(void)
"mcr p15, 0, r0, c1, c0, 1\n"
::: "r0");
#endif
#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I_H3
/* Enable non-secure access to some peripherals */
tzpc_init();
#endif
clock_init();
timer_init();
gpio_init();
#if !CONFIG_IS_ENABLED(DM_I2C)
i2c_init_board();
#endif
eth_init_board();
}
#define SUNXI_INVALID_BOOT_SOURCE -1
@ -335,11 +323,22 @@ u32 spl_boot_device(void)
void board_init_f(ulong dummy)
{
#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I_H3
/* Enable non-secure access to some peripherals */
tzpc_init();
#endif
clock_init();
timer_init();
gpio_init();
eth_init_board();
spl_init();
preloader_console_init();
#if CONFIG_IS_ENABLED(I2C) && CONFIG_IS_ENABLED(SYS_I2C_LEGACY)
/* Needed early by sunxi_board_init if PMU is enabled */
i2c_init_board();
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
#endif
sunxi_board_init();