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器件型号：SK-AM62 主题中讨论的其他器件：SysConfig
默认的2G 配置如下。 如何将其更改为适合我的板
内存@8000000｛
device_type ="存储器"；
/* 2G RAM */
REG =<0x00000000 0x80000000 0x00000000 0x80000000>；
}；
此外、我在 uboot 下进行了以下更改。 由于 SPL 大小限制非常严格、我编译的 tiboot3.bin tispl.bin 引导文件存在问题并且无法启动、因此我必须单独替换 u-boot.img 才能生效。
因此、我想尝试其他方法来修改 DDR、
From f9ce7cebc203ff33dde6328e547ba5164f48d3c0 Mon Sep 17 00:00:00 2001
From: "sunny.guo" <sunny.guo@myirtech.com>
Date: Fri, 28 Apr 2023 14:57:12 +0800
Subject: [PATCH] FEAT: auto-size DDR
---
arch/arm/dts/k3-am62x-r5-sk-common.dtsi | 1 +
arch/arm/dts/k3-am62x-sk-common.dtsi | 1 +
lib/fdtdec.c | 18 ++++++++++++++++++
3 files changed, 20 insertions(+)
diff --git a/arch/arm/dts/k3-am62x-r5-sk-common.dtsi b/arch/arm/dts/k3-am62x-r5-sk-common.dtsi
index b4a5e3cfa1..fb56a2601e 100644
--- a/arch/arm/dts/k3-am62x-r5-sk-common.dtsi
+++ b/arch/arm/dts/k3-am62x-r5-sk-common.dtsi
@@ -21,6 +21,7 @@
device_type = "memory";
/* 2G RAM */
reg = <0x00000000 0x80000000 0x00000000 0x80000000>;
+ auto-size;
u-boot,dm-spl;
};
diff --git a/arch/arm/dts/k3-am62x-sk-common.dtsi b/arch/arm/dts/k3-am62x-sk-common.dtsi
index 72ebb1400f..77106b6cdb 100644
--- a/arch/arm/dts/k3-am62x-sk-common.dtsi
+++ b/arch/arm/dts/k3-am62x-sk-common.dtsi
@@ -33,6 +33,7 @@
device_type = "memory";
/* 2G RAM */
reg = <0x00000000 0x80000000 0x00000000 0x80000000>;
+ auto-size;
};
diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index 0ab7105fef..ce567730ea 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -1097,8 +1097,10 @@ int fdtdec_setup_memory_banksize(void)
{
int bank, ret, reg = 0;
struct resource res;
+ bool autosize = false;
ofnode mem = ofnode_null();
+
mem = get_next_memory_node(mem);
if (!ofnode_valid(mem)) {
debug("%s: Missing /memory node\n", __func__);
@@ -1124,6 +1126,22 @@ int fdtdec_setup_memory_banksize(void)
gd->bd->bi_dram[bank].start = (phys_addr_t)res.start;
gd->bd->bi_dram[bank].size =
(phys_size_t)(res.end - res.start + 1);
+ autosize = ofnode_read_bool(mem, "auto-size");
+ if(autosize){
+ u64 new_size;
+ u64 start = gd->bd->bi_dram[bank].start;
+ u64 size = gd->bd->bi_dram[bank].size;
+
+// debug("Auto-sizing %llx, size %llx: ", start, size);
+ new_size = get_ram_size((long *)(uintptr_t)start, size);
+ if (new_size == size) {
+ debug("OK\n");
+ } else {
+// debug("sized to %llx\n", new_size);
+ size = new_size;
+ gd->bd->bi_dram[bank].size = size;
+ }
+ }
debug("%s: DRAM Bank #%d: start = 0x%llx, size = 0x%llx\n",
__func__, bank,
From 6583669a3cbc3c98e76733b3238fbad2548dd7cc Mon Sep 17 00:00:00 2001 From: "sunny.guo" <sunny.guo@myirtech.com> Date: Thu, 13 Apr 2023 09:22:23 +0800 Subject: [PATCH] FIX: increase SPL SIZE LIMIT --- configs/am62x_evm_r5_defconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/configs/am62x_evm_r5_defconfig b/configs/am62x_evm_r5_defconfig index 18a619cdc1..6265b7755c 100644 --- a/configs/am62x_evm_r5_defconfig +++ b/configs/am62x_evm_r5_defconfig @@ -18,7 +18,7 @@ CONFIG_SPL_MMC_SUPPORT=y CONFIG_SPL_SERIAL_SUPPORT=y CONFIG_SPL_DRIVERS_MISC_SUPPORT=y CONFIG_SPL_STACK_R_ADDR=0x82000000 -CONFIG_SPL_SIZE_LIMIT=0x3A7F0 +CONFIG_SPL_SIZE_LIMIT=0x3B7F0 CONFIG_SPL_SIZE_LIMIT_SUBTRACT_MALLOC=y CONFIG_SPL_SIZE_LIMIT_SUBTRACT_GD=y CONFIG_SPL_SIZE_LIMIT_PROVIDE_STACK=0x3500
