GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/arch/arm/mach-zynqmp/psu_spl_init.c

@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2018 Xilinx, Inc.
+ *
+ * Michal Simek <michal.simek@xilinx.com>
+ */
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/psu_init_gpl.h>
+
+#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;
+}