Add generic global_data

Add a generic global_data structure which all archs will eventually
use.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 102 insertions, 0 deletions

diff --git a/include/asm-generic/global_data.h b/include/asm-generic/global_data.h
new file mode 100644
index 0000000000..b8ac024045
--- /dev/null
+++ b/include/asm-generic/global_data.h
@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2012 The Chromium OS Authors.
+ * (C) Copyright 2002-2010
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * 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_GENERIC_GBL_DATA_H
+#define __ASM_GENERIC_GBL_DATA_H
+/*
+ * The following data structure is placed in some memory which is
+ * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
+ * some locked parts of the data cache) to allow for a minimum set of
+ * global variables during system initialization (until we have set
+ * up the memory controller so that we can use RAM).
+ *
+ * Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t)
+ *
+ * Each architecture has its own private fields. For now all are private
+ */
+
+#ifndef __ASSEMBLY__
+typedef struct global_data {
+	bd_t *bd;
+	unsigned long flags;
+	unsigned long baudrate;
+	unsigned long cpu_clk;	/* CPU clock in Hz!		*/
+	unsigned long bus_clk;
+	/* We cannot bracket this with CONFIG_PCI due to mpc5xxx */
+	unsigned long pci_clk;
+	unsigned long mem_clk;
+#if defined(CONFIG_LCD) || defined(CONFIG_VIDEO)
+	unsigned long fb_base;	/* Base address of framebuffer mem */
+#endif
+#if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
+	unsigned long post_log_word;  /* Record POST activities */
+	unsigned long post_log_res; /* success of POST test */
+	unsigned long post_init_f_time;  /* When post_init_f started */
+#endif
+#ifdef CONFIG_BOARD_TYPES
+	unsigned long board_type;
+#endif
+	unsigned long have_console;	/* serial_init() was called */
+#ifdef CONFIG_PRE_CONSOLE_BUFFER
+	unsigned long precon_buf_idx;	/* Pre-Console buffer index */
+#endif
+#ifdef CONFIG_MODEM_SUPPORT
+	unsigned long do_mdm_init;
+	unsigned long be_quiet;
+#endif
+	unsigned long env_addr;	/* Address  of Environment struct */
+	unsigned long env_valid;	/* Checksum of Environment valid? */
+
+	/* TODO: is this the same as relocaddr, or something else? */
+	unsigned long dest_addr;	/* Post-relocation address of U-Boot */
+	unsigned long dest_addr_sp;
+	unsigned long ram_top;	/* Top address of RAM used by U-Boot */
+
+	unsigned long relocaddr;	/* Start address of U-Boot in RAM */
+	phys_size_t ram_size;	/* RAM size */
+	unsigned long mon_len;	/* monitor len */
+	unsigned long irq_sp;		/* irq stack pointer */
+	unsigned long start_addr_sp;	/* start_addr_stackpointer */
+	unsigned long reloc_off;
+	struct global_data *new_gd;	/* relocated global data */
+	const void *fdt_blob;	/* Our device tree, NULL if none */
+	void **jt;		/* jump table */
+	char env_buf[32];	/* buffer for getenv() before reloc. */
+	struct arch_global_data arch;	/* architecture-specific data */
+} gd_t;
+#endif
+
+/*
+ * Global Data Flags
+ */
+#define GD_FLG_RELOC		0x00001	/* Code was relocated to RAM	   */
+#define GD_FLG_DEVINIT		0x00002	/* Devices have been initialized   */
+#define GD_FLG_SILENT		0x00004	/* Silent mode			   */
+#define GD_FLG_POSTFAIL		0x00008	/* Critical POST test failed	   */
+#define GD_FLG_POSTSTOP		0x00010	/* POST seqeunce aborted	   */
+#define GD_FLG_LOGINIT		0x00020	/* Log Buffer has been initialized */
+#define GD_FLG_DISABLE_CONSOLE	0x00040	/* Disable console (in & out)	   */
+#define GD_FLG_ENV_READY	0x00080	/* Env. imported into hash table   */
+
+#endif /* __ASM_GENERIC_GBL_DATA_H */