Introduce generic link section.h symbol files

We create a separate header file for link symbols defined by the link
scripts. It is helpful to have these all in one place and try to
make them common across architectures. Since Linux already has a similar
file, we bring this in even though many of the symbols there are not
relevant to us.

Each architecture has its own asm/sections.h where symbols specifc to
that architecture can be added. For now everything except AVR32 just
includes the generic header.

One change is needed in arch/avr32/lib/board.c to make this conversion
work.

Reviewed-by: Tom Rini <trini@ti.com> (version 5)
Signed-off-by: Simon Glass <sjg@chromium.org>

15 files changed, 330 insertions, 4 deletions

diff --git a/arch/arm/include/asm/sections.h b/arch/arm/include/asm/sections.h
new file mode 100644
index 0000000..c042cb6
--- /dev/null
+++ b/arch/arm/include/asm/sections.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2012 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __ASM_ARM_SECTIONS_H
+#define __ASM_ARM_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+#endif
diff --git a/arch/avr32/include/asm/sections.h b/arch/avr32/include/asm/sections.h
index a78fd40..056d7a0 100644
--- a/arch/avr32/include/asm/sections.h
+++ b/arch/avr32/include/asm/sections.h
@@ -22,11 +22,11 @@
 #ifndef __ASM_AVR32_SECTIONS_H
 #define __ASM_AVR32_SECTIONS_H
 
+#include <asm-generic/sections.h>
+
 /* References to section boundaries */
 
-extern char _text[], _etext[];
-extern char _data[], __data_lma[], _edata[], __edata_lma[];
+extern char __data_lma[], __edata_lma[];
 extern char __got_start[], __got_lma[], __got_end[];
-extern char __bss_end[];
 
 #endif /* __ASM_AVR32_SECTIONS_H */
diff --git a/arch/avr32/lib/board.c b/arch/avr32/lib/board.c
index e828e42..5a3f752 100644
--- a/arch/avr32/lib/board.c
+++ b/arch/avr32/lib/board.c
@@ -188,7 +188,7 @@ void board_init_f(ulong board_type)
 	 *  - stack
 	 */
 	addr = CONFIG_SYS_SDRAM_BASE + sdram_size;
-	monitor_len = __bss_end - _text;
+	monitor_len = (char *)__bss_end - _text;
 
 	/*
 	 * Reserve memory for u-boot code, data and bss.
diff --git a/arch/blackfin/include/asm/sections.h b/arch/blackfin/include/asm/sections.h
new file mode 100644
index 0000000..85af42c
--- /dev/null
+++ b/arch/blackfin/include/asm/sections.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2012 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __ASM_BLACKFIN_SECTIONS_H
+#define __ASM_BLACKFIN_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+#endif
diff --git a/arch/m68k/include/asm/sections.h b/arch/m68k/include/asm/sections.h
new file mode 100644
index 0000000..9228987
--- /dev/null
+++ b/arch/m68k/include/asm/sections.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2012 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __ASM_M68K_SECTIONS_H
+#define __ASM_M68K_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+#endif
diff --git a/arch/microblaze/include/asm/sections.h b/arch/microblaze/include/asm/sections.h
new file mode 100644
index 0000000..156c149
--- /dev/null
+++ b/arch/microblaze/include/asm/sections.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2012 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __ASM_MICROBLAZE_SECTIONS_H
+#define __ASM_MICROBLAZE_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+#endif
diff --git a/arch/mips/include/asm/sections.h b/arch/mips/include/asm/sections.h
new file mode 100644
index 0000000..54cd8b3
--- /dev/null
+++ b/arch/mips/include/asm/sections.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2012 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __ASM_MIPS_SECTIONS_H
+#define __ASM_MIPS_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+#endif
diff --git a/arch/nds32/include/asm/sections.h b/arch/nds32/include/asm/sections.h
new file mode 100644
index 0000000..a65735e
--- /dev/null
+++ b/arch/nds32/include/asm/sections.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2012 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __ASM_NDS32_SECTIONS_H
+#define __ASM_NDS32_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+#endif
diff --git a/arch/nios2/include/asm/sections.h b/arch/nios2/include/asm/sections.h
new file mode 100644
index 0000000..d813563
--- /dev/null
+++ b/arch/nios2/include/asm/sections.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2012 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __ASM_NIOS2_SECTIONS_H
+#define __ASM_NIOS2_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+#endif
diff --git a/arch/openrisc/include/asm/sections.h b/arch/openrisc/include/asm/sections.h
new file mode 100644
index 0000000..6eb5a66
--- /dev/null
+++ b/arch/openrisc/include/asm/sections.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2012 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __ASM_OPENRISC_SECTIONS_H
+#define __ASM_OPENRISC_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+#endif
diff --git a/arch/powerpc/include/asm/sections.h b/arch/powerpc/include/asm/sections.h
new file mode 100644
index 0000000..0a94102
--- /dev/null
+++ b/arch/powerpc/include/asm/sections.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2012 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __ASM_POWERPC_SECTIONS_H
+#define __ASM_POWERPC_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+#endif
diff --git a/arch/sandbox/include/asm/sections.h b/arch/sandbox/include/asm/sections.h
index eafce7d..4c37860 100644
--- a/arch/sandbox/include/asm/sections.h
+++ b/arch/sandbox/include/asm/sections.h
@@ -9,6 +9,8 @@
 #ifndef __SANDBOX_SECTIONS_H
 #define __SANDBOX_SECTIONS_H
 
+#include <asm-generic/sections.h>
+
 struct sb_cmdline_option;
 
 extern struct sb_cmdline_option *__u_boot_sandbox_option_start[],
diff --git a/arch/sh/include/asm/sections.h b/arch/sh/include/asm/sections.h
new file mode 100644
index 0000000..8824560
--- /dev/null
+++ b/arch/sh/include/asm/sections.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2012 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __ASM_SH_SECTIONS_H
+#define __ASM_SH_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+#endif
diff --git a/arch/sparc/include/asm/sections.h b/arch/sparc/include/asm/sections.h
new file mode 100644
index 0000000..90f7fa7
--- /dev/null
+++ b/arch/sparc/include/asm/sections.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2012 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __ASM_SPARC_SECTIONS_H
+#define __ASM_SPARC_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+#endif
diff --git a/arch/x86/include/asm/sections.h b/arch/x86/include/asm/sections.h
new file mode 100644
index 0000000..602df86
--- /dev/null
+++ b/arch/x86/include/asm/sections.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2012 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __ASM_X86_SECTIONS_H
+#define __ASM_X86_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+#endif