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https://github.com/AsahiLinux/u-boot
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sunxi: move non-essential code out of s_init()
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>
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5bc4cd05d7
1 changed files with 12 additions and 13 deletions
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@ -75,6 +75,7 @@ ulong board_get_usable_ram_top(ulong total_size)
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}
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#endif
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#ifdef CONFIG_SPL_BUILD
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static int gpio_init(void)
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{
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__maybe_unused uint val;
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@ -172,7 +173,6 @@ static int gpio_init(void)
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return 0;
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}
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#if defined(CONFIG_SPL_BOARD_LOAD_IMAGE) && defined(CONFIG_SPL_BUILD)
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static int spl_board_load_image(struct spl_image_info *spl_image,
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struct spl_boot_device *bootdev)
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{
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@ -227,18 +227,6 @@ void s_init(void)
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"mcr p15, 0, r0, c1, c0, 1\n"
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::: "r0");
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#endif
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#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I_H3
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/* Enable non-secure access to some peripherals */
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tzpc_init();
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#endif
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clock_init();
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timer_init();
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gpio_init();
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#if !CONFIG_IS_ENABLED(DM_I2C)
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i2c_init_board();
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#endif
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eth_init_board();
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}
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#define SUNXI_INVALID_BOOT_SOURCE -1
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@ -335,11 +323,22 @@ u32 spl_boot_device(void)
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void board_init_f(ulong dummy)
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{
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#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I_H3
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/* Enable non-secure access to some peripherals */
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tzpc_init();
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#endif
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clock_init();
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timer_init();
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gpio_init();
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eth_init_board();
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spl_init();
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preloader_console_init();
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#if CONFIG_IS_ENABLED(I2C) && CONFIG_IS_ENABLED(SYS_I2C_LEGACY)
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/* Needed early by sunxi_board_init if PMU is enabled */
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i2c_init_board();
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i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
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#endif
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sunxi_board_init();
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