SLCR can be used for IP configuration setting. Add SLCR skeleton to enable run time checking.
Signed-off-by: Michal Simek michal.simek@xilinx.com ---
arch/arm/cpu/armv8/zynqmp/Makefile | 1 + arch/arm/cpu/armv8/zynqmp/slcr.c | 63 +++++++++++++++++++++++++++++ arch/arm/include/asm/arch-zynqmp/hardware.h | 9 +++++ 3 files changed, 73 insertions(+) create mode 100644 arch/arm/cpu/armv8/zynqmp/slcr.c
diff --git a/arch/arm/cpu/armv8/zynqmp/Makefile b/arch/arm/cpu/armv8/zynqmp/Makefile index efab5eabc97b..d0ed2223ff79 100644 --- a/arch/arm/cpu/armv8/zynqmp/Makefile +++ b/arch/arm/cpu/armv8/zynqmp/Makefile @@ -8,3 +8,4 @@ obj-y += clk.o obj-y += cpu.o obj-$(CONFIG_MP) += mp.o +obj-y += slcr.o diff --git a/arch/arm/cpu/armv8/zynqmp/slcr.c b/arch/arm/cpu/armv8/zynqmp/slcr.c new file mode 100644 index 000000000000..713e9a62c019 --- /dev/null +++ b/arch/arm/cpu/armv8/zynqmp/slcr.c @@ -0,0 +1,63 @@ +/* + * (C) Copyright 2014 - 2015 Xilinx, Inc. + * Michal Simek michal.simek@xilinx.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <malloc.h> +#include <asm/arch/hardware.h> +#include <asm/arch/sys_proto.h> +#include <asm/arch/clk.h> + +/* + * zynq_slcr_mio_get_status - Get the status of MIO peripheral. + * + * @peri_name: Name of the peripheral for checking MIO status + * @get_pins: Pointer to array of get pin for this peripheral + * @num_pins: Number of pins for this peripheral + * @mask: Mask value + * @check_val: Required check value to get the status of periph + */ +struct zynq_slcr_mio_get_status { + const char *peri_name; + const int *get_pins; + int num_pins; + u32 mask; + u32 check_val; +}; + +static const struct zynq_slcr_mio_get_status mio_periphs[] = { +}; + +/* + * zynq_slcr_get_mio_pin_status - Get the MIO pin status of peripheral. + * + * @periph: Name of the peripheral + * + * Returns count to indicate the number of pins configured for the + * given @periph. + */ +int zynq_slcr_get_mio_pin_status(const char *periph) +{ + const struct zynq_slcr_mio_get_status *mio_ptr; + int val, i, j; + int mio = 0; + + for (i = 0; i < ARRAY_SIZE(mio_periphs); i++) { + if (strcmp(periph, mio_periphs[i].peri_name) == 0) { + mio_ptr = &mio_periphs[i]; + for (j = 0; j < mio_ptr->num_pins; j++) { + val = readl(&slcr_base->mio_pin + [mio_ptr->get_pins[j]]); + if ((val & mio_ptr->mask) == mio_ptr->check_val) + mio++; + } + break; + } + } + + return mio; +} diff --git a/arch/arm/include/asm/arch-zynqmp/hardware.h b/arch/arm/include/asm/arch-zynqmp/hardware.h index c9dc49d78317..15bd519bfbe1 100644 --- a/arch/arm/include/asm/arch-zynqmp/hardware.h +++ b/arch/arm/include/asm/arch-zynqmp/hardware.h @@ -55,6 +55,15 @@ struct iou_scntr { #define EMMC_MODE 0x00000006 #define JTAG_MODE 0x00000000
+#define ZYNQMP_IOU_SLCR_BASEADDR 0xFF180000 + +struct iou_slcr_regs { + u32 mio_pin[78]; + u32 reserved[442]; +}; + +#define slcr_base ((struct iou_slcr_regs *)ZYNQMP_IOU_SLCR_BASEADDR) + #define ZYNQMP_RPU_BASEADDR 0xFF9A0000
struct rpu_regs {