karo: tx28: request gpio for acitivity LED and disable LED on failure

[karo-tx-uboot.git] / doc / README.zynq

diff --git a/doc/README.zynq b/doc/README.zynq
index 56a74b4f1f0b78f06d54f4483791074ae850c5e8..b89c39edac18c169d66f234e07414a04fc58bde6 100644 (file)
--- a/doc/README.zynq
+++ b/doc/README.zynq
@@ -17,9 +17,8 @@ Xilinx Zynq-7000 All Programmable SoCs enable extensive system level
 differentiation, integration, and flexibility through hardware, software,
 and I/O programmability.
 
-* zc70x
-  - zc702 (single qspi, gem0, mmc) [1]
-  - zc706 (dual parallel qspi, gem0, mmc) [2]
+* zc702 (single qspi, gem0, mmc) [1]
+* zc706 (dual parallel qspi, gem0, mmc) [2]
 * zed (single qspi, gem0, mmc) [3]
 * microzed (single qspi, gem0, mmc) [4]
 * zc770
@@ -28,11 +27,37 @@ and I/O programmability.
   - zc770-xm012 (nor)
   - zc770-xm013 (dual parallel qspi, gem1)
 
-3. Mainline status
+3. Building
+
+ ex. configure and build for zc702 board
+   $ make zynq_zc702_config
+   $ make
+
+4. Bootmode
+
+Zynq has a facility to read the bootmode from the slcr bootmode register
+once user is setting through jumpers on the board - see page no:1546 on [5]
+
+All possible bootmode values are defined in Table 6-2:Boot_Mode MIO Pins
+on [5].
+
+board_late_init() will read the bootmode values using slcr bootmode register
+at runtime and assign the modeboot variable to specific bootmode string which
+is intern used in autoboot.
+
+SLCR bootmode register Bit[3:0] values
+#define ZYNQ_BM_NOR            0x02
+#define ZYNQ_BM_SD             0x05
+#define ZYNQ_BM_JTAG           0x0
+
+"modeboot" variable can assign any of "norboot", "sdboot" or "jtagboot"
+bootmode strings at runtime.
+
+5. Mainline status
 
 - Added basic board configurations support.
 - Added zynq u-boot bsp code - arch/arm/cpu/armv7/zynq
-- Added zynq boards named - zynq, zynq_dcc
+- Added zynq boards named - zc70x, zed, microzed, zc770_xm010, zc770_xm012, zc770_xm013
 - Added zynq drivers:
   serial - drivers/serial/serial_zynq.c
   net - drivers/net/zynq_gem.c
@@ -40,20 +65,22 @@ and I/O programmability.
   mmc - drivers/mmc/zynq_sdhci.c
   spi-  drivers/spi/zynq_spi.c
   i2c - drivers/i2c/zynq_i2c.c
+- Done proper cleanups on board configurations
+- Added basic FDT support for zynq boards
+- d-cache support for zynq_gem.c
 
-4. TODO
+6. TODO
 
-- Add zynq boards support - zc70x, zed, microzed, zc770
+- Add zynq boards support - zc770_xm011
 - Add zynq qspi controller driver
 - Add zynq nand controller driver
-- d-cache support for zynq_gem.c
-- FDT support for zynq boards
-- Need proper cleanups on board configurations
+- Add FDT support on individual drivers
 
 [1] http://www.xilinx.com/products/boards-and-kits/EK-Z7-ZC702-G.htm
 [2] http://www.xilinx.com/products/boards-and-kits/EK-Z7-ZC706-G.htm
 [3] http://zedboard.org/product/zedboard
 [4] http://zedboard.org/product/microzed
+[5] http://www.xilinx.com/support/documentation/user_guides/ug585-Zynq-7000-TRM.pdf
 
 --
 Jagannadha Sutradharudu Teki <jaganna@xilinx.com>