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| author | Jagannadha Sutradharudu Teki <jagannadha.sutradharudu-teki@xilinx.com> | 2014-01-09 01:48:21 +0530 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2014-01-10 15:18:33 +0100 |
| commit | b3de92495f23db58a2643fb9328edacbf9a17f1c (patch) | |
| tree | 8c19a291bffd9b22576f7c50124c6e99a2fbe0c7 /doc | |
| parent | fe5eddbf9818ba857d0d7f5e849b5682c9717b74 (diff) | |
| download | u-boot-imx-b3de92495f23db58a2643fb9328edacbf9a17f1c.zip u-boot-imx-b3de92495f23db58a2643fb9328edacbf9a17f1c.tar.gz u-boot-imx-b3de92495f23db58a2643fb9328edacbf9a17f1c.tar.bz2 | |
zynq: Add support to find bootmode
Added support to find the bootmodes by reading
slcr bootmode register. this can be helpful to
autoboot the configurations w.r.t a specified bootmode.
Added this functionality on board_late_init as it's not
needed for normal initializtion part.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/README.zynq | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/doc/README.zynq b/doc/README.zynq index 56a74b4..ea1c8c1 100644 --- a/doc/README.zynq +++ b/doc/README.zynq @@ -28,7 +28,27 @@ and I/O programmability. - zc770-xm012 (nor) - zc770-xm013 (dual parallel qspi, gem1) -3. Mainline status +3. 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. + +4. Mainline status - Added basic board configurations support. - Added zynq u-boot bsp code - arch/arm/cpu/armv7/zynq @@ -41,7 +61,7 @@ and I/O programmability. spi- drivers/spi/zynq_spi.c i2c - drivers/i2c/zynq_i2c.c -4. TODO +5. TODO - Add zynq boards support - zc70x, zed, microzed, zc770 - Add zynq qspi controller driver @@ -54,6 +74,7 @@ and I/O programmability. [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> |