For mpc85xx SoCs, the core begins execution from address 0xFFFFFFFC.
In non-secure boot scenario from NAND, this address will map to CPC
configured as SRAM. But in case of secure boot, this default address
always maps to IBR (Internal Boot ROM).
The IBR code requires that the bootloader(U-boot) must lie in 0 to 3.5G
address space i.e. 0x0 - 0xDFFFFFFF.
For secure boot target from NAND, the text base for SPL is kept same as
non-secure boot target i.e. 0xFFFx_xxxx but the SPL U-boot binary will
be copied to CPC configured as SRAM with address in 0-3.5G(0xBFFC_0000)
As a the virtual and physical address of CPC would be different. The
virtual address 0xFFFx_xxxx needs to be mapped to physical address
0xBFFx_xxxx.
Create a new PBI file to configure CPC as SRAM with address 0xBFFC0000
and update DCFG SCRTACH1 register with location of Header required for
secure boot.
The changes are similar to
commit 467a40dfe3
powerpc/mpc85xx: SECURE BOOT- NAND secure boot target for P3041
While P3041 has a 1MB CPC and does not require SPL. On T104x, CPC
is only 256K and thus SPL framework is used.
The changes are only applicable for SPL U-Boot running out of CPC SRAM
and not the next level U-Boot loaded on DDR.
Reviewed-by: Ruchika Gupta <ruchika.gupta@nxp.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Aneesh Bansal <aneesh.bansal@nxp.com>
Signed-off-by: Sumit Garg <sumit.garg@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
Update PBI command in pbi_cfg files to keep register bit
to default reset value while configuring CPC
as SRAM
Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
-A_007662 states that for x1 link width, PCIe2 controller trains in
Gen1 speed while configured for Gen2 speed.
Workaround:Set the width to x1 and speed to Gen2 by writing to
CCSR registers in PBI phase
-A_008007 states that PVR register may show random value.
Workaround: Reset PVR register using DCSR space in PBI phase
Add PBI based software workaround for A_007662 and A_008007
in t104x_pbi.cfg. This is required for SPL-based bootloaders
like NAND-boot, SD-boot, SPI-boot
Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
Add support of 2 stage NAND, SD, SPI boot loader using SPL framework.
here, PBL initialise the internal SRAM and copy SPL(160KB). This further
initialise DDR using SPD and environment and copy u-boot(768 KB) from NAND to DDR.
Finally SPL transer control to u-boot.
Initialise/create followings required for SPL framework
- Add spl.c which defines board_init_f, board_init_r
- update tlb and ddr accordingly
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
Use a default RCW of protocol 0x66.
A PBI configure file which uses CPC as 256KB SRAM. It can be used by
PBL tool on T1040 to build a pbl boot image.
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Use a default RCW of protocol 0x2A_0x98, and a PBI configure file which
uses CPC1 as 512KB SRAM, then PBL tool can be used on B4860 to build a
pbl boot image.
Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Added a default RCW(1_28_6_12) and PBI configure file for T4240, so it can use
PBL tool to produce the ramboot image.
Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Sumit Garg
Priyanka Jain
Prabhakar Kushwaha
Shaohui Xie