Hi all,
I am trying to get SPL working on a imx7 based board. I need to configure the DDR voltage before u-boot can be loaded from NAND. I am using the pico-imx7_defconfig as a starting point. It already has SPL configured to initialize ddr.
From board_init_f I call spl_early_init() to initialize malloc_simple so that I can use the pmic driver to set the DDR voltage and configure DDR . So far everything is working as expected, I can write/read from DDR.
But this is as far as SPL wants to go.. my guess is that switching from malloc_simple in board_init_f() to the full malloc implementation is not working.
- I use boundarydevices/imx_usb_loader to load u-boot-nand-spl.imx -
- git.denx.de/u-boot-imx version 2019.01-rc1 -
This what my debug output shows.
U-Boot SPL 2019.01-rc1-dirty (Jan 09 2019 - 16:07:51 +0100) spl_early_init power_init Set ddr regulator to 1.50V -- mALLOc -- 00000040 pmic_alloc: new pmic struct: 0x009467b0 pmic_get: pmic BD71815 -> 0x009467b0 Bus: 1 PMIC:BD71815 probed! i2c_write_data: chip=0x4b, len=0x0 write_data: i2c_read_data: chip=0x4b, len=0x1 0x41 PMIC: BD71815 DEV_ID=0x41 i2c_write_data: chip=0x4b, len=0x1 write_data: 0x10 setup drr controller! Testing ram
SPL: board_init_r()
using memory 0x88300000-0x88400000 for malloc() spl_init spl_board_init Trying to boot from NAND spl: nand - using hw ecc Trying to load image from CONFIG_SYS_NAND_U_BOOT_OFFS 400000 87800000 nand_spl_load_image mxs_nand_init -- mALLOc -- 00000598 -- malloc_extend_top -- pagesz = 00001000 nb = 000005A0 top = 0091F010 -- sbrk increment = 000005B0 returns = 88300000-- sbrk end brk = 88300000 -- sbrk increment = 00000A50 returns = 883005B0-- sbrk end top = 88300000 old_top = 0091F010 old_top_size = 00000000 top_size = 00001000
MXS NAND: Failed to allocate private data.
Attached the spl/u-boot.cfg and pico-imx7d.h files.
Here are my questions.
- Has anyone tried this before on a imx7d?
- Do I have conflicting configuration options?
- Do I need to relocate the complete SPL from SRAM to DDR to make this work?
- Should malloc be available in spl_board_init()?
By enabling CONFIG_SPL_SYS_MALLOC_SIMPLE it boots a little further, but gets stuck in the nand driver after reading the onfi data and searching for a bad block table.
Should it be possible to have usb + nand + i2c working using only CONFIG_SPL_SYS_MALLOC_SIMPLE?
Met vriendelijke groeten Kind regards,
Rens Dol Software Engineer Opticon Sensors Europe B.V. Opaallaan 35 2132 XV HOOFDDORP The Netherlands Tel.+31(0)235692720 rens.dol@opticon.com 1