Hi Kever,
Am Freitag, 15. Mai 2020, 04:07:41 CEST schrieb Kever Yang:
On 2020/5/12 下午6:34, Heiko Stuebner wrote:
From: Heiko Stuebner heiko.stuebner@theobroma-systems.com
Parts of later SPL may need RAM information as well, so do full dram_init() call, which includes the existing dram probing but also initializes the ram information in gd.
NAK.
I would prefer to use DM interface and leave the decision of ram initialization to the ram driver.
With CONFIG_SPL_RAM, we get dram_init from mach-rockchip/sdram.c not some board-specific variant and the in the code change below you can see that it is guarded by such a defined(CONFIG_SPL_RAM).
That dram_init() function does only: - uclass_get_device(UCLASS_RAM, 0, &dev); - ram_get_info(dev, &ram); - gd->ram_size = ram.size;
So the only difference between the old code and my change is that it will store information about usable ram in the gd struct, so that other parts of the SPL can access it - and we of course keep using the DM interface as before ;-) .
Heiko
All Rockchip SoCs use a TPL+SPL combination now, so that's ok for all of them.
Still not all of the board use the combination.
Signed-off-by: Heiko Stuebner heiko.stuebner@theobroma-systems.com Change-Id: I2c7496f2d88d65a9f80f74d2139bf307bb4b442b
Please remove the Change-Id next time.
Thanks,
- Kever
arch/arm/mach-rockchip/spl.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-rockchip/spl.c b/arch/arm/mach-rockchip/spl.c index 0b76af6080..0eda2c3485 100644 --- a/arch/arm/mach-rockchip/spl.c +++ b/arch/arm/mach-rockchip/spl.c @@ -135,13 +135,15 @@ void board_init_f(ulong dummy) /* Init ARM arch timer in arch/arm/cpu/armv7/arch_timer.c */ timer_init(); #endif -#if !defined(CONFIG_TPL) || defined(CONFIG_SPL_OS_BOOT) +#if !defined(CONFIG_TPL) || defined(CONFIG_SPL_RAM) debug("\nspl:init dram\n");
- ret = uclass_get_device(UCLASS_RAM, 0, &dev);
- ret = dram_init(); if (ret) { printf("DRAM init failed: %d\n", ret); return; }
- gd->ram_top = gd->ram_base + get_effective_memsize();
- gd->ram_top = board_get_usable_ram_top(gd->ram_size); #endif preloader_console_init(); }