[U-Boot] [PATCH 2/2] arm: socfpga: Enable tiny printf and simple malloc in SPL

[Sylvain Lesne <lesne@alse-fr.com>]

Hi,

On 05/30/2016 05:22 PM, Marek Vasut wrote:
> Enable both features to reduce the SPL size by 6 kiB.
>
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Chin Liang See <clsee@altera.com>
> Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
> Cc: Pavel Machek <pavel@denx.de>
> Cc: Stefan Roese <sr@denx.de>

I tried to use the raw MMC boot (on the sockit, with current master
+ your patches), so I changed the following:

--- a/include/configs/socfpga_common.h
+++ b/include/configs/socfpga_common.h
@@ -349,9 +349,10 @@ unsigned int cm_get_qspi_controller_clk_hz(void);
#define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME "u-boot-dtb.img"
#define CONFIG_SPL_LIBDISK_SUPPORT
#else
-#define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION 3
-#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR 0xa00 /* offset 2560
sect (1M+256k) */
-#define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS 800 /* 400 KB */
+#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION 3
+#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR 0x200 /* offset 512
sect (256k) */
+#define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS 1000 /* 512 KB */
+#define CONFIG_SPL_LIBDISK_SUPPORT
#endif
#endif

AFAIK, there were two mistakes:
1) FS_BOOT_PARTITION instead of RAW_MODE_U_BOOT
2) CONFIG_SPL_LIBDISK_SUPPORT was missing

(I edited the offset to be able to use u-boot-with-spl.sfp directly)

With these settings, I think we run into the size problem reported
previously in the ML.

So, enabling tiny printf could help, but we now get:

disk/built-in.o: In function `part_get_info_extended':
...u-boot/disk/part_dos.c:236: undefined reference to `sprintf'

So I think we can just put "info->name[0] = 0;" instead of
the snprintf() calls, when using tiny printf.

I can submit those changes as two patches if it makes sense.

Thanks,
Sylvain