On Wed, 2015-03-25 at 12:58 -0400, Tom Rini wrote:
On Wed, Mar 25, 2015 at 09:32:45AM +0100, Sjoerd Simons wrote:
On Wed, 2015-03-25 at 01:11 -0400, Tom Rini wrote:
On Mon, Mar 23, 2015 at 03:04:48PM -0600, Simon Glass wrote:
Hi Sjoerd,
On 12 March 2015 at 15:33, Sjoerd Simons sjoerd.simons@collabora.co.uk wrote:
The peach boards have their SDRAM start address at 0x20000000 instead of 0x40000000 which seems common for all other exynos5 based boards. This means the layout set in exynos5-common.h causes the kernel be loaded more then 128MB (at 0x42000000) away from memory start which breaks booting kernels with CONFIG_AUTO_ZRELADDR
Define a custom MEM_LAYOUT_ENV_SETTINGS for both peach boards which uses the same offsets from start of memory as the common exynos5 settings.
This fixes booting via bootz and PXE
Signed-off-by: Sjoerd Simons sjoerd.simons@collabora.co.uk
include/configs/peach-pi.h | 8 ++++++++ include/configs/peach-pit.h | 8 ++++++++ 2 files changed, 16 insertions(+)
diff --git a/include/configs/peach-pi.h b/include/configs/peach-pi.h index f04f061..e3cb09e 100644 --- a/include/configs/peach-pi.h +++ b/include/configs/peach-pi.h @@ -16,6 +16,14 @@ #define CONFIG_ENV_OFFSET (FLASH_SIZE - CONFIG_BL2_SIZE) #define CONFIG_SPI_BOOTING
+#define MEM_LAYOUT_ENV_SETTINGS \
"bootm_size=0x10000000\0" \"kernel_addr_r=0x22000000\0" \"fdt_addr_r=0x23000000\0" \"ramdisk_addr_r=0x23300000\0" \"scriptaddr=0x30000000\0" \"pxefile_addr_r=0x31000000\0"#include <configs/exynos5420-common.h> #include <configs/exynos5-dt-common.h>
diff --git a/include/configs/peach-pit.h b/include/configs/peach-pit.h index b5efbdc..3ee42ef 100644 --- a/include/configs/peach-pit.h +++ b/include/configs/peach-pit.h @@ -16,6 +16,14 @@ #define CONFIG_ENV_OFFSET (FLASH_SIZE - CONFIG_BL2_SIZE) #define CONFIG_SPI_BOOTING
+#define MEM_LAYOUT_ENV_SETTINGS \
"bootm_size=0x10000000\0" \"kernel_addr_r=0x22000000\0" \"fdt_addr_r=0x23000000\0" \"ramdisk_addr_r=0x23300000\0" \"scriptaddr=0x30000000\0" \"pxefile_addr_r=0x31000000\0"#include <configs/exynos5420-common.h> #include <configs/exynos5-dt-common.h>
It would be great if we could have this in the device tree.
I understand what you're thinking but this is environment. And really this is not board specific, this is SoC family specific which is why the similar part for TI stuff is in ti_armv7_common.h :)
Exynos 5 has the same in exynos5-common.h, however for whatever reason the peach pi/pit boards are different then other exynos board supported by u-boot thusfar. So in this case, this information _is_ board specific not platform specific.
Oh I missed that early on, sorry. But...
Why not change things around a bit to enable CONFIG_CMD_SETEXPR and then have MEM_LAYOUT_ENV_SETTINGS just set the exynos5_ddr_base and then setexpr kernel_addr_r $exynos5_ddr_base + 0x2000000 and similar in the generic part.
Partially because i didn't know the setexpr command and partially because i wanted a minimally disruptive patch that can hopefully still make it for 2015.4.
I think doing the above would also require tweaking the distro_boot_cmd code to integrate it nicely.
But even in case of including it in device tree, a default/common setting could go into the platforms dtsi with board-specific overrides as needed.
One thing i have wondered though, looking at the various boards specifying the various memory layour addresses. They all end up being relatively similar offset to the base memory address, which makes me think it may be possible to calculate these values in the initialisation code rather then having to hardcode it in the environment. However, even if that's a sensible thing, something for later :)
... Yes, we should then take what I just did above and make it even further wide-spread among boards where we have more than ~512MB DDR or so :)
Sounds like a plan.