We want to unify the global_data structure. Most fields are common across
architectures, but there are a fair number of SOC-specific additions. It
isn't clear how best to deal with these, but for now we just use #ifdef.
Checkpatch warnings here might be unavoidable:
warning: include/asm-generic/global_data.h,43: do not add new typedefs
warning: include/asm-generic/global_data.h,117: Use of volatile is usually
wrong: see Documentation/volatile-considered-harmful.txt
warning: include/asm-generic/global_data.h,121: storage class should be at the
beginning of the declaration
Signed-off-by: Simon Glass <s...@chromium.org>
---
include/asm-generic/global_data.h | 115 +++++++++++++++++++++++++++++++++++++
1 files changed, 115 insertions(+), 0 deletions(-)
create mode 100644 include/asm-generic/global_data.h
diff --git a/include/asm-generic/global_data.h
b/include/asm-generic/global_data.h
new file mode 100644
index 0000000..6199926
--- /dev/null
+++ b/include/asm-generic/global_data.h
@@ -0,0 +1,115 @@
+/*
+ * (C) Copyright 2002-2010
+ * Wolfgang Denk, DENX Software Engineering, w...@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)
+ *
+ * s...@chromium.org: Well it would be nice to have a generic one of these
+ * since so many fields are similar. But it means that everyone architecture
+ * will want to add its own nutty fields. Perhaps that is no bad thing since
+ * it shows up inconsistences and might produce downward pressure on the
+ * number of fields.
+ */
+
+#ifndef __ASSEMBLY__
+typedef struct global_data {
+ bd_t *bd;
+ unsigned long flags;
+ unsigned long baudrate;
+#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
+ unsigned long have_console; /* serial_init() was called */
+#ifdef CONFIG_PRE_CONSOLE_BUFFER
+ unsigned long precon_buf_idx; /* Pre-Console buffer index */
+#endif
+ unsigned long env_addr; /* Address of Environment struct */
+ unsigned long env_valid; /* Checksum of Environment valid? */
+ /* Here begins ARM-specific things. Needs discussion */
+#ifdef CONFIG_AT91FAMILY
+ /* "static data" needed by at91's clock.c */
+ unsigned long cpu_clk_rate_hz;
+ unsigned long main_clk_rate_hz;
+ unsigned long mck_rate_hz;
+ unsigned long plla_rate_hz;
+ unsigned long pllb_rate_hz;
+ unsigned long at91_pllb_usb_init;
+#endif
+#ifdef CONFIG_ARM
+ /* "static data" needed by most of timer.c on ARM platforms */
+ unsigned long timer_rate_hz;
+ unsigned long tbl;
+ unsigned long tbu;
+ unsigned long long timer_reset_value;
+ unsigned long lastinc;
+#endif
+#ifdef CONFIG_IXP425
+ unsigned long timestamp;
+#endif
+ /* 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;
+#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
+ unsigned long tlb_addr;
+#endif
+ 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. */
+} 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 */
--
1.7.7.3
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