From 2ad341ed7d90e007af8e878424f7b6e4f24d90ac Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Wed, 10 Jan 2018 09:36:09 +0100 Subject: arm64: zynqmp: Prepare psu_init rework Move generic functions to common location psu_spl_init.c. Function declarations are added to private header. These changes are done in connection to the fact that still files from HDF can be copied over and compilation should pass. Signed-off-by: Michal Simek --- arch/arm/cpu/armv8/zynqmp/psu_spl_init.c | 80 ++++++++++++++++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 arch/arm/cpu/armv8/zynqmp/psu_spl_init.c (limited to 'arch/arm/cpu/armv8/zynqmp/psu_spl_init.c') diff --git a/arch/arm/cpu/armv8/zynqmp/psu_spl_init.c b/arch/arm/cpu/armv8/zynqmp/psu_spl_init.c new file mode 100644 index 0000000000..28d39570b3 --- /dev/null +++ b/arch/arm/cpu/armv8/zynqmp/psu_spl_init.c @@ -0,0 +1,80 @@ +/* + * Copyright 2018 Xilinx, Inc. + * + * Michal Simek + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include +#include +#include + +#define PSU_MASK_POLL_TIME 1100000 + +int __maybe_unused mask_pollonvalue(unsigned long add, u32 mask, u32 value) +{ + int i = 0; + + while ((__raw_readl(add) & mask) != value) { + if (i == PSU_MASK_POLL_TIME) + return 0; + i++; + } + return 1; +} + +__weak int mask_poll(u32 add, u32 mask) +{ + int i = 0; + unsigned long addr = add; + + while (!(__raw_readl(addr) & mask)) { + if (i == PSU_MASK_POLL_TIME) + return 0; + i++; + } + return 1; +} + +__weak u32 mask_read(u32 add, u32 mask) +{ + unsigned long addr = add; + + return __raw_readl(addr) & mask; +} + +__weak void mask_delay(u32 delay) +{ + udelay(delay); +} + +__weak void psu_mask_write(unsigned long offset, unsigned long mask, + unsigned long val) +{ + unsigned long regval = 0; + + regval = readl(offset); + regval &= ~(mask); + regval |= (val & mask); + writel(regval, offset); +} + +__weak void prog_reg(unsigned long addr, unsigned long mask, + unsigned long shift, unsigned long value) +{ + int rdata = 0; + + rdata = readl(addr); + rdata = rdata & (~mask); + rdata = rdata | (value << shift); + writel(rdata, addr); +} + +__weak int psu_init(void) +{ + /* + * This function is overridden by the one in + * board/xilinx/zynqmp/(platform)/psu_init_gpl.c, if it exists. + */ + return -1; +} -- cgit