diff options
Diffstat (limited to 'include/configs/imx7_spl.h')
| -rw-r--r-- | include/configs/imx7_spl.h | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/include/configs/imx7_spl.h b/include/configs/imx7_spl.h index 01d1cd83b2..128f612392 100644 --- a/include/configs/imx7_spl.h +++ b/include/configs/imx7_spl.h @@ -18,15 +18,23 @@ * - Set the stack at the end of the free area section, at 0x00946BB8. * - The BOOT ROM loads what they consider the firmware image * which consists of a 4K header in front of us that contains the IVT, DCD - * and some padding thus 'our' max size is really 0x00946BB8 - 0x00911000. - * 64KB is more then enough for the SPL. + * and some padding. However, the manual also states that the ROM uses the + * OCRAM_EPCD and OCRAM_PXP areas for itself. While the SPL is free to use + * this range for stack and malloc, the SPL itself must fit below 0x920000, + * or the image will be truncated in at least some boot modes like USB SDP. + * Thus our max size is really 0x00920000 - 0x00912000. If necessary, + * CONFIG_SPL_TEXT_BASE could be moved to 0x00911000 to gain 4KB of space + * for the SPL, but 56KB should be more than enough for the SPL. */ -#define CONFIG_SPL_MAX_SIZE 0x10000 +#define CONFIG_SPL_MAX_SIZE 0xE000 #define CONFIG_SPL_STACK 0x00946BB8 /* - * Pad SPL to 68KB (4KB header + 64KB max size). This allows to write the - * SPL/U-Boot combination generated with u-boot-with-spl.imx directly to a - * boot media (given that boot media specific offset is configured properly). + * Pad SPL to 68KB (4KB header + 56KB max size + 8KB extra padding) + * The extra padding could be removed, but this value was used historically + * based on an incorrect CONFIG_SPL_MAX_SIZE definition. + * This allows to write the SPL/U-Boot combination generated with + * u-boot-with-spl.imx directly to a boot media (given that boot media specific + * offset is configured properly). */ #define CONFIG_SPL_PAD_TO 0x11000 |