[U-Boot] i.MX35PDK: Starting U-Boot from serial NOR-Flash

[Fabio Estevam]

On Wed, Jul 4, 2012 at 2:31 PM, Fabio Estevam <festevam at gmail.com> wrote:

> Take a look at Freescale U-boot as a reference:
> http://opensource.freescale.com/git?p=imx/uboot-imx.git;a=blob;f=board/freescale/mx35_3stack/flash_header.S;h=b662669f80061be18787eafea6eb3668786b6224;hb=329240314138de1fb8d3d08531e0c3408482972f

Just to clarify: this file has the RAM settings for two versions of
the board. Earlier mx35pdk came with mDDR and the more recent boards
have DDR2. Most likely your mx35pdk has DDR2 populated, do the values
you need to use are:

//DDR2 init
DCDGEN(2, 4, 0xB8001010, 0x00000304)
DCDGEN(3, 4, 0xB8001010, 0x0000030C)
DCDGEN(4, 4, 0xB8001004, 0x007ffc3f)
DCDGEN(5, 4, 0xB8001000, 0x92220000)
DCDGEN(6, 4, 0x80000400, 0x12345678)
DCDGEN(7, 4, 0xB8001000, 0xA2220000)
DCDGEN(8, 4, 0x80000000, 0x87654321)
DCDGEN(9, 4, 0x80000000, 0x87654321)
DCDGEN(10, 4, 0xB8001000, 0xB2220000)
DCDGEN(11, 1, 0x80000233, 0xda)
DCDGEN(12, 1, 0x82000780, 0xda)
DCDGEN(13, 1, 0x82000400, 0xda)
DCDGEN(14, 4, 0xB8001000, 0x82226080)
DCDGEN(15, 4, 0xB8001004, 0x007ffc3f)
DCDGEN(16, 4, 0xB800100C, 0x007ffc3f)
DCDGEN(17, 4, 0xB8001010, 0x00000304)
DCDGEN(18, 4, 0xB8001008, 0x00002000)

You just need to convert these values into the proper syntax for imximage.cfg.