Commit graph

9 commits

Author SHA1 Message Date
Mingkai Hu
9a1a0aedbb NAND boot: MPC8536DS support
MPC8536E can support booting from NAND flash which uses the
image u-boot-nand.bin. This image contains two parts: a 4K
NAND loader and a main U-Boot image. The former is appended
to the latter to produce u-boot-nand.bin. The 4K NAND loader
includes the corresponding nand_spl directory, along with the
code twisted by CONFIG_NAND_SPL. The main U-Boot image just
like a general U-Boot image except the parts that included by
CONFIG_SYS_RAMBOOT.

When power on, eLBC will automatically load from bank 0 the
4K NAND loader into the FCM buffer RAM where CPU can execute
the boot code directly. In the first stage, the NAND loader
copies itself to RAM or L2SRAM to free up the FCM buffer RAM,
then loads the main image from NAND flash to RAM or L2SRAM
and boot from it.

This patch implements the NAND loader to load the main image
into L2SRAM, so the main image can configure the RAM by using
SPD EEPROM. In the first stage, the NAND loader copies itself
to the second to last 4K address space, and uses the last 4K
address space as the initial RAM for stack.

Obviously, the size of L2SRAM shouldn't be less than the size
of the image used. If so, the workaround is to generate another
image that includes the code to configure the RAM by SPD and
load it to L2SRAM first, then relocate the main image to RAM
to boot up.

Signed-off-by: Mingkai Hu <Mingkai.hu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-09-30 08:42:06 -05:00
Kumar Gala
aca5f018a8 85xx: Introduce CONFIG_SYS_PCI*_IO_VIRT for FSL boards
Introduce a new define to seperate out the virtual address that PCI
IO space is at from the physical address.  In most situations these are
mapped 1:1.  However any code accessing the bus should use VIRT.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Andy Fleming <afleming@freescale.com>
2009-01-23 17:03:13 -06:00
Kumar Gala
5af0fdd81c 85xx: Introduce CONFIG_SYS_PCI*_MEM_VIRT for FSL boards
Introduce a new define to seperate out the virtual address that PCI
memory is at from the physical address.  In most situations these are
mapped 1:1.  However any code accessing the bus should use VIRT.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Andy Fleming <afleming@freescale.com>
2009-01-23 17:03:13 -06:00
Kumar Gala
c953ddfd56 85xx: separate FLASH BASE virtual from physical address
Added a CONFIG_SYS_FLASH_BASE_PHYS for use as the physical address and
maintain CONFIG_SYS_FLASH_BASE as the virtual address of the flash.

This allows us to deal with 36-bit phys on these boards in the future.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Andy Fleming <afleming@freescale.com>
2009-01-23 17:03:13 -06:00
Kumar Gala
52b565f5ad 85xx: separate PIXIS virtual from physical address
Added a PIXIS_BASE_PHYS for use as the physical address and maintain
PIXIS_BASE as the virtual address of the PIXIS fpga registers.

This allows us to deal with 36-bit phys on these boards in the future.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Andy Fleming <afleming@freescale.com>
2009-01-23 17:03:13 -06:00
Jason Jin
c57fc28947 NAND: Add NAND support for MPC8536DS board
This patch defines 1M TLB&LAW size for NAND on MPC8536DS, assigns 0xffa00000
for CONFIG_SYS_NAND_BASE and adds other NAND supports in config file.
It also moves environment(CONFIG_ENV_ADDR) outside of u-boot image.

Singed-off-by: Jason Jin <Jason.Jin@freescale.com>
Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-10-31 13:14:31 -05:00
Kumar Gala
7c0d4a7508 85xx: Improve flash remapping on MPC8572DS & MPC8536DS
Changing the flash from cacheable to cache-inhibited was taking a significant
amount of time due to the fact that we were iterating over the full 256M of
flash.  Instead we can just flush the L1 d-cache and invalidate the i-cache.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-10-18 21:54:04 +02:00
Jean-Christophe PLAGNIOL-VILLARD
6d0f6bcf33 rename CFG_ macros to CONFIG_SYS
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-10-18 21:54:03 +02:00
Kumar Gala
9490a7f1a9 mpc85xx: Add support for the MPC8536DS reference board
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Srikanth Srinivasan <srikanth.srinivasan@freescale.com>
Signed-off-by: Dejan Minic <minic@freescale.com>
Signed-off-by: Jason Jin <Jason.jin@freescale.com>
Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-08-27 11:43:54 -05:00