[U-Boot] [PATCH v2 43/58] Add generic global_data

Simon Glass
2012-12-14T06:49:12Z

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

Signed-off-by: Simon Glass <sjg@chromium.org>
---
Changes in v2:
- Remove tabs after #ifdef and #define in generic global_data

include/asm-generic/global_data.h | 102 +++++++++++++++++++++++++++++++++++++
1 files changed, 102 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..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 at 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 */
--
1.7.7.3