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u-boot-megous/include/configs
Philipp Tomsich c61177aa10 rockchip: rk3368: spl: add memory layout for TPL and SPL
For the RK3368, we use a multi-stage boot-process consisting of the
following:
  1.  TPL: initalises DRAM, returns to boot-ROM (which then loads
           the next stage and transfers control to it)
  2.  SPL: a full-features SPL stage including OF_CONTROL and FIT
           image loading, which fetches the ATF, DTB and full U-Boot
	   and then transfers control to the ATF (using the BL31
	   parameter block to indicate the location of BL33/U-Boot)
  3.  ATF: sets up the secure world and exits to BL33 (i.e. a full
           U-Boot) in the normal world
  4.  full U-Boot

TPL/SPL and the full U-Boot are built from this tree and need to
run from distinct text addresses and with distinct initial stack
pointer addresses.

This commit sets up the configuration to run:
  -  TPL from the SRAM at 0xff8c0000 (note that the first 0x1000
     	 are reserved for use by the boot-ROM and contain the SP
	 when the TPL is entered)
  -  SPL from DRAM at 0x0
  -  U-Boot from DRAM at 0x200000

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-08-13 17:12:22 +02:00
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