X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=doc%2FREADME.rockchip;h=d35071d653e2d1aeaf1c4a0eed9a5d0b84040c2d;hb=ebbc23a0495cd189cda2760f66cc0195dd030a19;hp=12fec38139c827a2d4511b97a1694984d473ce15;hpb=470135be276b2d92c6da464c68839202d4ff0d08;p=u-boot

diff --git a/doc/README.rockchip b/doc/README.rockchip
index 12fec38139..d35071d653 100644
--- a/doc/README.rockchip
+++ b/doc/README.rockchip
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0+
 #
 # Copyright (C) 2015 Google. Inc
 # Written by Simon Glass <sjg@chromium.org>
-#
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 U-Boot on Rockchip
 ==================
@@ -99,13 +97,13 @@ To write an image that boots from an SD card (assumed to be /dev/sdc):
    ./firefly-rk3288/tools/mkimage -n rk3288 -T rksd -d \
 	firefly-rk3288/spl/u-boot-spl-dtb.bin out && \
    sudo dd if=out of=/dev/sdc seek=64 && \
-   sudo dd if=firefly-rk3288/u-boot-dtb.img of=/dev/sdc seek=256
+   sudo dd if=firefly-rk3288/u-boot-dtb.img of=/dev/sdc seek=16384
 
 This puts the Rockchip header and SPL image first and then places the U-Boot
-image at block 256 (i.e. 128KB from the start of the SD card). This
+image at block 16384 (i.e. 8MB from the start of the SD card). This
 corresponds with this setting in U-Boot:
 
-   #define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR	256
+   #define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR	0x4000
 
 Put this SD (or micro-SD) card into your board and reset it. You should see
 something like:
@@ -150,6 +148,24 @@ Note: rk3036 SDMMC and debug uart use the same iomux, so if you boot from SD, th
       debug uart must be disabled
 
 
+Booting from an SD card on RK3288 with TPL
+==========================================
+
+Since the size of SPL can't be exceeded 0x8000 bytes in RK3288, it is not possible add
+new SPL features like Falcon mode or etc.
+
+So introduce TPL so-that adding new features to SPL is possible because now TPL should
+run minimal with code like DDR, clock etc and rest of new features in SPL.
+
+As of now TPL is added on Vyasa-RK3288 board.
+
+To write an image that boots from an SD card (assumed to be /dev/mmcblk0):
+
+   ./tools/mkimage -n rk3288 -T rksd -d ./tpl/u-boot-tpl.bin out &&
+    cat ./spl/u-boot-spl-dtb.bin >> out &&
+    sudo dd if=out of=/dev/mmcblk0 seek=64 &&
+    sudo dd if=u-boot-dtb.img of=/dev/mmcblk0 seek=16384
+
 Booting from an SD card on RK3188
 =================================
 
@@ -158,17 +174,17 @@ described above, but the image creation needs a bit more care.
 
 The bootrom of rk3188 expects to find a small 1kb loader which returns
 control to the bootrom, after which it will load the real loader, which
-can then be up to 29kb in size and does the regular ddr init.
+can then be up to 29kb in size and does the regular ddr init.  This is
+handled by a single image (built as the SPL stage) that tests whether
+it is handled for the first or second time via code executed from the
+boot0-hook.
 
 Additionally the rk3188 requires everything the bootrom loads to be
 rc4-encrypted. Except for the very first stage the bootrom always reads
 and decodes 2kb pages, so files should be sized accordingly.
 
 # copy tpl, pad to 1020 bytes and append spl
-cat tpl/u-boot-tpl.bin > tplspl.bin
-truncate -s 1020 tplspl.bin
-cat spl/u-boot-spl.bin >> tplspl.bin
-tools/mkimage -n rk3188 -T rksd -d tplspl.bin out
+tools/mkimage -n rk3188 -T rksd -d spl/u-boot-spl.bin out
 
 # truncate, encode and append u-boot.bin
 truncate -s %2048 u-boot.bin