Commit b3de9249 authored by Jagannadha Sutradharudu Teki's avatar Jagannadha Sutradharudu Teki Committed by Albert ARIBAUD

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: default avatarJagannadha Sutradharudu Teki <jaganna@xilinx.com>
parent fe5eddbf
......@@ -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) >>
......
......@@ -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);
......
......@@ -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)
......
......@@ -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>
......
......@@ -140,6 +140,7 @@
#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 */
......
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