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

source/bootloader/u-boot-2020.01/board/xilinx/microblaze-generic/microblaze-generic.c

@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2007-2018 Michal Simek
+ *
+ * Michal SIMEK <monstr@monstr.eu>
+ */
+
+/*
+ * This is a board specific file.  It's OK to include board specific
+ * header files
+ */
+
+#include <common.h>
+#include <config.h>
+#include <init.h>
+#include <dm/lists.h>
+#include <fdtdec.h>
+#include <linux/sizes.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init_banksize(void)
+{
+	return fdtdec_setup_memory_banksize();
+}
+
+int dram_init(void)
+{
+	if (fdtdec_setup_mem_size_base() != 0)
+		return -EINVAL;
+
+	return 0;
+};
+
+int board_late_init(void)
+{
+	ulong max_size, lowmem_size;
+
+#if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_SYSRESET_MICROBLAZE)
+	int ret;
+
+	ret = device_bind_driver(gd->dm_root, "mb_soft_reset",
+				 "reset_soft", NULL);
+	if (ret)
+		printf("Warning: No reset driver: ret=%d\n", ret);
+#endif
+
+	if (!(gd->flags & GD_FLG_ENV_DEFAULT)) {
+		debug("Saved variables - Skipping\n");
+		return 0;
+	}
+
+	max_size = gd->start_addr_sp - CONFIG_STACK_SIZE;
+	max_size = round_down(max_size, SZ_16M);
+
+	/* Linux default LOWMEM_SIZE is 0x30000000 = 768MB */
+	lowmem_size = gd->ram_base + 768 * 1024 * 1024;
+
+	env_set_addr("initrd_high", (void *)min_t(ulong, max_size,
+						  lowmem_size));
+	env_set_addr("fdt_high", (void *)min_t(ulong, max_size, lowmem_size));
+
+	return 0;
+}