Add generic global_data

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

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

diff --git a/include/asm-generic/global_data.h b/include/asm-generic/global_data.h
new file mode 100644 (file)
index 0000000..b8ac024
--- /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 */