Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / common / env_embedded.c

diff --git a/qemu/roms/u-boot/common/env_embedded.c b/qemu/roms/u-boot/common/env_embedded.c
new file mode 100644 (file)
index 0000000..1c4f915
--- /dev/null
+++ b/qemu/roms/u-boot/common/env_embedded.c
@@ -0,0 +1,104 @@
+/*
+ * (C) Copyright 2001
+ * Erik Theisen,  Wave 7 Optics, etheisen@mindspring.com.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#ifndef __ASSEMBLY__
+#define        __ASSEMBLY__                    /* Dirty trick to get only #defines */
+#endif
+#define        __ASM_STUB_PROCESSOR_H__        /* don't include asm/processor. */
+#include <config.h>
+#undef __ASSEMBLY__
+#include <environment.h>
+#include <linux/stringify.h>
+
+/* Handle HOSTS that have prepended crap on symbol names, not TARGETS. */
+#if defined(__APPLE__)
+/* Leading underscore on symbols */
+#  define SYM_CHAR "_"
+#else /* No leading character on symbols */
+#  define SYM_CHAR
+#endif
+
+/*
+ * Generate embedded environment table
+ * inside U-Boot image, if needed.
+ */
+#if defined(ENV_IS_EMBEDDED) || defined(CONFIG_BUILD_ENVCRC)
+/*
+ * Only put the environment in it's own section when we are building
+ * U-Boot proper.  The host based program "tools/envcrc" does not need
+ * a seperate section.  Note that ENV_CRC is only defined when building
+ * U-Boot itself.
+ */
+#if (defined(CONFIG_SYS_USE_PPCENV) || defined(CONFIG_NAND_U_BOOT)) && \
+       defined(ENV_CRC) /* Environment embedded in U-Boot .ppcenv section */
+/* XXX - This only works with GNU C */
+#  define __PPCENV__   __attribute__ ((section(".ppcenv")))
+#  define __PPCTEXT__  __attribute__ ((section(".text")))
+
+#elif defined(USE_HOSTCC) /* Native for 'tools/envcrc' */
+#  define __PPCENV__   /*XXX DO_NOT_DEL_THIS_COMMENT*/
+#  define __PPCTEXT__  /*XXX DO_NOT_DEL_THIS_COMMENT*/
+
+#else /* Environment is embedded in U-Boot's .text section */
+/* XXX - This only works with GNU C */
+#  define __PPCENV__   __attribute__ ((section(".text")))
+#  define __PPCTEXT__  __attribute__ ((section(".text")))
+#endif
+
+/*
+ * Macros to generate global absolutes.
+ */
+#if defined(__bfin__)
+# define GEN_SET_VALUE(name, value)    \
+       asm(".set " GEN_SYMNAME(name) ", " GEN_VALUE(value))
+#else
+# define GEN_SET_VALUE(name, value)    \
+       asm(GEN_SYMNAME(name) " = " GEN_VALUE(value))
+#endif
+#define GEN_SYMNAME(str)       SYM_CHAR #str
+#define GEN_VALUE(str)         #str
+#define GEN_ABS(name, value)                   \
+       asm(".globl " GEN_SYMNAME(name));       \
+       GEN_SET_VALUE(name, value)
+
+/*
+ * Check to see if we are building with a
+ * computed CRC.  Otherwise define it as ~0.
+ */
+#if !defined(ENV_CRC)
+#  define ENV_CRC      (~0)
+#endif
+
+#define DEFAULT_ENV_INSTANCE_EMBEDDED
+#include <env_default.h>
+
+#ifdef CONFIG_ENV_ADDR_REDUND
+env_t redundand_environment __PPCENV__ = {
+       0,              /* CRC Sum: invalid */
+       0,              /* Flags:   invalid */
+       {
+       "\0"
+       }
+};
+#endif /* CONFIG_ENV_ADDR_REDUND */
+
+/*
+ * These will end up in the .text section
+ * if the environment strings are embedded
+ * in the image.  When this is used for
+ * tools/envcrc, they are placed in the
+ * .data/.sdata section.
+ *
+ */
+unsigned long env_size __PPCTEXT__ = sizeof(env_t);
+
+/*
+ * Add in absolutes.
+ */
+GEN_ABS(env_offset, CONFIG_ENV_OFFSET);
+
+#endif /* ENV_IS_EMBEDDED */