Das U-Boot: Universal Boot Loader

diff --git a/include/asm-arm/global_data.h b/include/asm-arm/global_data.h
new file mode 100644 (file)
index 0000000..bf26d0b
--- /dev/null
+++ b/include/asm-arm/global_data.h
@@ -0,0 +1,63 @@
+/*
+ * (C) Copyright 2002
+ * 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_GBL_DATA_H
+#define __ASM_GBL_DATA_H
+/*
+ * The following data structure is placed in some memory wich 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 CFG_GBL_DATA_SIZE > sizeof(gd_t)
+ */
+
+typedef        struct  global_data {
+       bd_t            *bd;
+       unsigned long   flags;
+       unsigned long   baudrate;
+       unsigned long   have_console;   /* serial_init() was called */
+       unsigned long   reloc_off;      /* Relocation Offset */
+       unsigned long   env_addr;       /* Address  of Environment struct */
+       unsigned long   env_valid;      /* Checksum of Environment valid? */
+#ifdef CONFIG_VFD
+       unsigned long   fb_base;        /* base address of frame buffer */
+#endif
+#if 0
+       unsigned long   cpu_clk;        /* CPU clock in Hz!             */
+       unsigned long   bus_clk;
+       unsigned long   ram_size;       /* RAM size */
+       unsigned long   reset_status;   /* reset status register at boot */
+#endif
+} gd_t;
+
+/*
+ * Global Data Flags
+ */
+#define        GD_FLG_RELOC    0x00001         /* Code was relocated to RAM            */
+#define        GD_FLG_DEVINIT  0x00002         /* Devices have been initialized        */
+
+#define DECLARE_GLOBAL_DATA_PTR     register gd_t *gd asm ("r8")
+
+#endif /* __ASM_GBL_DATA_H */

diff --git a/include/asm-ppc/global_data.h b/include/asm-ppc/global_data.h
new file mode 100644 (file)
index 0000000..7cf234d
--- /dev/null
+++ b/include/asm-ppc/global_data.h
@@ -0,0 +1,87 @@
+/*
+ * (C) Copyright 2002
+ * 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_GBL_DATA_H
+#define __ASM_GBL_DATA_H
+/*
+ * The following data structure is placed in some memory wich 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 CFG_GBL_DATA_SIZE > sizeof(gd_t)
+ */
+
+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;
+#if defined(CONFIG_8260)
+       /* There are many clocks on the MPC8260 - see page 9-5 */
+       unsigned long   vco_out;
+       unsigned long   cpm_clk;
+       unsigned long   scc_clk;
+       unsigned long   brg_clk;
+#endif
+       unsigned long   ram_size;       /* RAM size */
+       unsigned long   reloc_off;      /* Relocation Offset */
+       unsigned long   reset_status;   /* reset status register at boot        */
+       unsigned long   env_addr;       /* Address  of Environment struct       */
+       unsigned long   env_valid;      /* Checksum of Environment valid?       */
+       unsigned long   have_console;   /* serial_init() was called             */
+#if defined(CFG_ALLOC_DPRAM) || defined(CONFIG_8260)
+       unsigned int    dp_alloc_base;
+       unsigned int    dp_alloc_top;
+#endif
+#if defined(CONFIG_EVB64260)
+       unsigned int    mirror_hack[16];
+#endif
+#if defined(CONFIG_SANDPOINT) || defined(CONFIG_MUSENKI)
+       void *          console_addr;
+#endif
+#if defined(CONFIG_LCD) || defined(CONFIG_VIDEO)
+       unsigned long   fb_base;        /* Base address of framebuffer memory   */
+#endif
+#ifdef CONFIG_BOARD_TYPES
+       unsigned long   board_type;
+#endif
+} gd_t;
+
+/*
+ * Global Data Flags
+ */
+#define        GD_FLG_RELOC    0x00001         /* Code was relocated to RAM            */
+#define        GD_FLG_DEVINIT  0x00002         /* Devices have been initialized        */
+
+#if 1
+#define DECLARE_GLOBAL_DATA_PTR     register gd_t *gd asm ("r29")
+#else /* We could use plain global data, but the resulting code is bigger */
+#define XTRN_DECLARE_GLOBAL_DATA_PTR   extern
+#define DECLARE_GLOBAL_DATA_PTR     XTRN_DECLARE_GLOBAL_DATA_PTR \
+                                   gd_t *gd
+#endif
+
+#endif /* __ASM_GBL_DATA_H */