Initial import of qemu-2.4.1HEADmaster

1 files changed, 116 insertions, 0 deletions

diff --git a/roms/u-boot/arch/x86/lib/init_helpers.c b/roms/u-boot/arch/x86/lib/init_helpers.c
new file mode 100644
index 00000000..b5d937fe
--- /dev/null
+++ b/roms/u-boot/arch/x86/lib/init_helpers.c
@@ -0,0 +1,116 @@
+/*
+ * (C) Copyright 2011
+ * Graeme Russ, <graeme.russ@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+#include <fdtdec.h>
+#include <spi.h>
+#include <asm/sections.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* Get the top of usable RAM */
+__weak ulong board_get_usable_ram_top(ulong total_size)
+{
+	return gd->ram_size;
+}
+
+int calculate_relocation_address(void)
+{
+	const ulong uboot_size = (uintptr_t)&__bss_end -
+			(uintptr_t)&__text_start;
+	ulong total_size;
+	ulong dest_addr;
+	ulong fdt_size = 0;
+
+#if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL)
+	if (gd->fdt_blob)
+		fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
+#endif
+	total_size = ALIGN(uboot_size, 1 << 12) + CONFIG_SYS_MALLOC_LEN +
+		CONFIG_SYS_STACK_SIZE + fdt_size;
+
+	dest_addr = board_get_usable_ram_top(total_size);
+	/*
+	 * NOTE: All destination address are rounded down to 16-byte
+	 *       boundary to satisfy various worst-case alignment
+	 *       requirements
+	 */
+	dest_addr &= ~15;
+
+#if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL)
+	/*
+	 * If the device tree is sitting immediate above our image then we
+	 * must relocate it. If it is embedded in the data section, then it
+	 * will be relocated with other data.
+	 */
+	if (gd->fdt_blob) {
+		dest_addr -= fdt_size;
+		gd->new_fdt = (void *)dest_addr;
+		dest_addr &= ~15;
+	}
+#endif
+	/* U-Boot is below the FDT */
+	dest_addr -= uboot_size;
+	dest_addr &= ~((1 << 12) - 1);
+	gd->relocaddr = dest_addr;
+	gd->reloc_off = dest_addr - (uintptr_t)&__text_start;
+
+	/* Stack is at the bottom, so it can grow down */
+	gd->start_addr_sp = dest_addr - CONFIG_SYS_MALLOC_LEN;
+
+	return 0;
+}
+
+int init_cache_f_r(void)
+{
+	/* Initialise the CPU cache(s) */
+	return init_cache();
+}
+
+bd_t bd_data;
+
+int init_bd_struct_r(void)
+{
+	gd->bd = &bd_data;
+	memset(gd->bd, 0, sizeof(bd_t));
+
+	return 0;
+}
+
+int init_func_spi(void)
+{
+	puts("SPI:   ");
+	spi_init();
+	puts("ready\n");
+	return 0;
+}
+
+int find_fdt(void)
+{
+#ifdef CONFIG_OF_EMBED
+	/* Get a pointer to the FDT */
+	gd->fdt_blob = __dtb_dt_begin;
+#elif defined CONFIG_OF_SEPARATE
+	/* FDT is at end of image */
+	gd->fdt_blob = (ulong *)&_end;
+#endif
+	/* Allow the early environment to override the fdt address */
+	gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
+						(uintptr_t)gd->fdt_blob);
+
+	return 0;
+}
+
+int prepare_fdt(void)
+{
+	/* For now, put this check after the console is ready */
+	if (fdtdec_prepare_fdt()) {
+		panic("** CONFIG_OF_CONTROL defined but no FDT - please see "
+			"doc/README.fdt-control");
+	}
+
+	return 0;
+}