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 --- V3: none V2: Documented bootmode detection code
arch/arm/cpu/armv7/zynq/slcr.c | 6 ++++++ arch/arm/include/asm/arch-zynq/sys_proto.h | 1 + board/xilinx/zynq/board.c | 25 +++++++++++++++++++++++++ doc/README.zynq | 25 +++++++++++++++++++++++-- include/configs/zynq-common.h | 1 + 5 files changed, 56 insertions(+), 2 deletions(-)
diff --git a/arch/arm/cpu/armv7/zynq/slcr.c b/arch/arm/cpu/armv7/zynq/slcr.c index 717ec65..b4c11c3 100644 --- a/arch/arm/cpu/armv7/zynq/slcr.c +++ b/arch/arm/cpu/armv7/zynq/slcr.c @@ -101,6 +101,12 @@ void zynq_slcr_devcfg_enable(void) zynq_slcr_lock(); }
+u32 zynq_slcr_get_boot_mode(void) +{ + /* Get the bootmode register value */ + return readl(&slcr_base->boot_mode); +} + u32 zynq_slcr_get_idcode(void) { return (readl(&slcr_base->pss_idcode) & SLCR_IDCODE_MASK) >> diff --git a/arch/arm/include/asm/arch-zynq/sys_proto.h b/arch/arm/include/asm/arch-zynq/sys_proto.h index 110de90..8f925af 100644 --- a/arch/arm/include/asm/arch-zynq/sys_proto.h +++ b/arch/arm/include/asm/arch-zynq/sys_proto.h @@ -13,6 +13,7 @@ extern void zynq_slcr_cpu_reset(void); extern void zynq_slcr_gem_clk_setup(u32 gem_id, u32 rclk, u32 clk); extern void zynq_slcr_devcfg_disable(void); extern void zynq_slcr_devcfg_enable(void); +extern u32 zynq_slcr_get_boot_mode(void); extern u32 zynq_slcr_get_idcode(void); extern void zynq_ddrc_init(void);
diff --git a/board/xilinx/zynq/board.c b/board/xilinx/zynq/board.c index 5119c09..a5b9bde 100644 --- a/board/xilinx/zynq/board.c +++ b/board/xilinx/zynq/board.c @@ -12,6 +12,12 @@
DECLARE_GLOBAL_DATA_PTR;
+/* Bootmode setting values */ +#define ZYNQ_BM_MASK 0x0F +#define ZYNQ_BM_NOR 0x02 +#define ZYNQ_BM_SD 0x05 +#define ZYNQ_BM_JTAG 0x0 + #ifdef CONFIG_FPGA Xilinx_desc fpga;
@@ -59,6 +65,25 @@ int board_init(void) return 0; }
+int board_late_init(void) +{ + switch ((zynq_slcr_get_boot_mode()) & ZYNQ_BM_MASK) { + case ZYNQ_BM_NOR: + setenv("modeboot", "norboot"); + break; + case ZYNQ_BM_SD: + setenv("modeboot", "sdboot"); + break; + case ZYNQ_BM_JTAG: + setenv("modeboot", "jtagboot"); + break; + default: + setenv("modeboot", ""); + break; + } + + return 0; +}
#ifdef CONFIG_CMD_NET int board_eth_init(bd_t *bis) 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....
-- Jagannadha Sutradharudu Teki jaganna@xilinx.com diff --git a/include/configs/zynq-common.h b/include/configs/zynq-common.h index bcd7241..145cb46 100644 --- a/include/configs/zynq-common.h +++ b/include/configs/zynq-common.h @@ -143,6 +143,7 @@
#define CONFIG_CMDLINE_EDITING #define CONFIG_AUTO_COMPLETE +#define CONFIG_BOARD_LATE_INIT #define CONFIG_SYS_LONGHELP #define CONFIG_SYS_MAXARGS 15 /* max number of command args */ #define CONFIG_SYS_CBSIZE 256 /* Console I/O Buffer Size */