From 06f5b5a5fc9784e395b401c7ab61dffe04b1a4f9 Mon Sep 17 00:00:00 2001 From: Robert Hancock Date: Thu, 8 Aug 2019 12:14:39 -0600 Subject: ARM: imx: Support larger SPL size on IMX6DQ Previously the SPL size on all iMX6 platforms was restricted to 68KB because the OCRAM size on iMX6SL/DL parts is only 128KB. However, the other iMX6 variants have 256KB of OCRAM. Add an option CONFIG_MX6_OCRAM_256KB which allows using the full size on boards which don't need to support the SL/DL variants. This allows for an SPL size of 196KB, which makes it much easier to use configurations such as SPL with driver model and FDT control. Signed-off-by: Robert Hancock Tested-by: Adam Ford #imx6q_logic --- include/configs/imx6_spl.h | 28 ++++++++++++++++++++++++++-- 1 file changed, 26 insertions(+), 2 deletions(-) (limited to 'include/configs/imx6_spl.h') diff --git a/include/configs/imx6_spl.h b/include/configs/imx6_spl.h index 212dee7..a223930 100644 --- a/include/configs/imx6_spl.h +++ b/include/configs/imx6_spl.h @@ -7,10 +7,32 @@ #define __IMX6_SPL_CONFIG_H #ifdef CONFIG_SPL + +#ifdef CONFIG_MX6_OCRAM_256KB /* - * see Figure 8-3 in IMX6DQ/IMX6SDL Reference manuals: + * see Figure 8.4.1 in IMX6DQ Reference manuals: + * - IMX6DQ OCRAM (IRAM) is from 0x00907000 to 0x0093FFFF + * - BOOT ROM stack is at 0x0093FFB8 + * - if icache/dcache is enabled (eFuse/strapping controlled) then the + * IMX BOOT ROM will setup MMU table at 0x00938000, therefore we need to + * fit between 0x00907000 and 0x00938000. + * - Additionally 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 0x00908000 - 0x00938000 + * or 192KB + */ +#define CONFIG_SPL_MAX_SIZE 0x30000 +#define CONFIG_SPL_STACK 0x0093FFB8 +/* + * Pad SPL to 196KB (4KB header + 192KB 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). + */ +#define CONFIG_SPL_PAD_TO 0x31000 +#else +/* + * see Figure 8-3 in IMX6SDL Reference manuals: * - IMX6SDL OCRAM (IRAM) is from 0x00907000 to 0x0091FFFF - * - IMX6DQ has 2x IRAM of IMX6SDL but we intend to support IMX6SDL as well * - BOOT ROM stack is at 0x0091FFB8 * - if icache/dcache is enabled (eFuse/strapping controlled) then the * IMX BOOT ROM will setup MMU table at 0x00918000, therefore we need to @@ -29,6 +51,8 @@ */ #define CONFIG_SPL_PAD_TO 0x11000 +#endif + /* MMC support */ #if defined(CONFIG_SPL_MMC_SUPPORT) #define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION 1 -- cgit v1.1