summaryrefslogtreecommitdiffstats
path: root/meta/recipes-bsp/u-boot/files/0001-am335x_evm.h-Add-use-DEFAULT_LINUX_BOOT_ENV-environm.patch
diff options
context:
space:
mode:
Diffstat (limited to 'meta/recipes-bsp/u-boot/files/0001-am335x_evm.h-Add-use-DEFAULT_LINUX_BOOT_ENV-environm.patch')
-rw-r--r--meta/recipes-bsp/u-boot/files/0001-am335x_evm.h-Add-use-DEFAULT_LINUX_BOOT_ENV-environm.patch74
1 files changed, 74 insertions, 0 deletions
diff --git a/meta/recipes-bsp/u-boot/files/0001-am335x_evm.h-Add-use-DEFAULT_LINUX_BOOT_ENV-environm.patch b/meta/recipes-bsp/u-boot/files/0001-am335x_evm.h-Add-use-DEFAULT_LINUX_BOOT_ENV-environm.patch
new file mode 100644
index 0000000..77e35bb
--- /dev/null
+++ b/meta/recipes-bsp/u-boot/files/0001-am335x_evm.h-Add-use-DEFAULT_LINUX_BOOT_ENV-environm.patch
@@ -0,0 +1,74 @@
1From 5701384cea4a829b772bf7a96a74825b58c22385 Mon Sep 17 00:00:00 2001
2From: Denys Dmytriyenko <denys@ti.com>
3Date: Thu, 17 Apr 2014 12:25:40 -0400
4Subject: [PATCH] am335x_evm.h: Add, use DEFAULT_LINUX_BOOT_ENV environment
5 string
6
7Modified version of the patch currently being reviewed for mainline:
8http://patchwork.ozlabs.org/patch/334861/
9
10To deal with a reoccurring problem properly we need to specify addresses
11for the Linux kernel, Flatted Device Tree and ramdisk that obey the
12constraints within the kernel's Documentation/arm/Booting file but also
13make sure that we relocate things within a valid address range.
14
15Signed-off-by: Denys Dmytriyenko <denys@ti.com>
16Signed-off-by: Tom Rini <trini@ti.com>
17
18Upstream-Status: Pending
19---
20 include/configs/am335x_evm.h | 31 ++++++++++++++++++++++++++-----
21 1 file changed, 26 insertions(+), 5 deletions(-)
22
23diff --git a/include/configs/am335x_evm.h b/include/configs/am335x_evm.h
24index c5a6d4b..01e32b3 100644
25--- a/include/configs/am335x_evm.h
26+++ b/include/configs/am335x_evm.h
27@@ -54,10 +54,7 @@
28 #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
29 #ifndef CONFIG_SPL_BUILD
30 #define CONFIG_EXTRA_ENV_SETTINGS \
31- "loadaddr=0x80200000\0" \
32- "fdtaddr=0x80F80000\0" \
33- "fdt_high=0xffffffff\0" \
34- "rdaddr=0x81000000\0" \
35+ DEFAULT_LINUX_BOOT_ENV \
36 "bootdir=/boot\0" \
37 "bootfile=uImage\0" \
38 "fdtfile=undefined\0" \
39@@ -197,7 +194,31 @@
40 #define CONFIG_SYS_MEMTEST_END (CONFIG_SYS_MEMTEST_START \
41 + (8 * 1024 * 1024))
42
43-#define CONFIG_SYS_LOAD_ADDR 0x81000000 /* Default load address */
44+/*
45+ * Our DDR memory always starts at 0x80000000 and U-Boot shall have
46+ * relocated itself to higher in memory by the time this value is used.
47+ * However, set this to a 32MB offset to allow for easier Linux kernel
48+ * booting as the default is often used as the kernel load address.
49+ */
50+#define CONFIG_SYS_LOAD_ADDR 0x82000000 /* Default load address */
51+
52+/*
53+ * We setup defaults based on constraints from the Linux kernel, which should
54+ * also be safe elsewhere. We have the default load at 32MB into DDR (for
55+ * the kernel), FDT above 128MB (the maximum location for the end of the
56+ * kernel), and the ramdisk 512KB above that (allowing for hopefully never
57+ * seen large trees). We say all of this must be within the first 256MB
58+ * as that will normally be within the kernel lowmem and thus visible via
59+ * bootm_size and we only run on platforms with 256MB or more of memory.
60+ */
61+#define DEFAULT_LINUX_BOOT_ENV \
62+ "loadaddr=0x82000000\0" \
63+ "kernel_addr_r=0x82000000\0" \
64+ "fdtaddr=0x88000000\0" \
65+ "fdt_addr_r=0x88000000\0" \
66+ "rdaddr=0x88080000\0" \
67+ "ramdisk_addr_r=0x88080000\0" \
68+ "bootm_size=0x10000000\0"
69
70 #define CONFIG_MMC
71 #define CONFIG_GENERIC_MMC
72--
731.9.2
74