[PATCH v2 1/2] rockchip: spl: do full dram_init instead of only probing

Heiko Stuebner heiko at sntech.de
Mon May 25 19:57:24 CEST 2020

From: Heiko Stuebner <heiko.stuebner at 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.

dram_init() from sdram.c does the following steps:
- uclass_get_device(UCLASS_RAM, ...) like the current code
- ret = ram_get_info(dev, &ram);
- gd->ram_size = ram.size;

CONFIG_SPL_RAM already makes sure that sdram.c gets compiled
and thus no other variant of dram_init() can exist.

So it's the same functionality as before and only adds that the
SPL now aquires knowledge about the amount of available ram,
which it didn't know about before.

Signed-off-by: Heiko Stuebner <heiko.stuebner at theobroma-systems.com>
changes in v2:
- dropped changeid
- expanded commit message on how this does not change functionality

 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 */
-#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);
+	gd->ram_top = gd->ram_base + get_effective_memsize();
+	gd->ram_top = board_get_usable_ram_top(gd->ram_size);

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