mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-30 16:39:35 +00:00
e81495224f
Secure memory is at the end of memory, separated and reserved from OS, tracked by gd->secure_ram. Secure memory can host MMU tables, security monitor, etc. This is different from PRAM used to reserve private memory. PRAM offers memory at the top of u-boot memory, not necessarily the real end of memory for systems with very large DDR. Using the end of memory simplifies MMU setup and avoid memory fragmentation. "bdinfo" command shows gd->secure_ram value if this memory is marked as secured. Signed-off-by: York Sun <yorksun@freescale.com>
145 lines
5.1 KiB
C
145 lines
5.1 KiB
C
/*
|
|
* Copyright (c) 2012 The Chromium OS Authors.
|
|
* (C) Copyright 2002-2010
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#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__
|
|
#include <membuff.h>
|
|
#include <linux/list.h>
|
|
|
|
typedef struct global_data {
|
|
bd_t *bd;
|
|
unsigned long flags;
|
|
unsigned int 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? */
|
|
|
|
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 */
|
|
#ifdef CONFIG_SYS_MEM_RESERVE_SECURE
|
|
#define MEM_RESERVE_SECURE_SECURED 0x1
|
|
#define MEM_RESERVE_SECURE_MAINTAINED 0x2
|
|
#define MEM_RESERVE_SECURE_ADDR_MASK (~0x3)
|
|
/*
|
|
* Secure memory addr
|
|
* This variable needs maintenance if the RAM base is not zero,
|
|
* or if RAM splits into non-consecutive banks. It also has a
|
|
* flag indicating the secure memory is marked as secure by MMU.
|
|
* Flags used: 0x1 secured
|
|
* 0x2 maintained
|
|
*/
|
|
phys_addr_t secure_ram;
|
|
#endif
|
|
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 */
|
|
|
|
#ifdef CONFIG_DM
|
|
struct udevice *dm_root; /* Root instance for Driver Model */
|
|
struct udevice *dm_root_f; /* Pre-relocation root instance */
|
|
struct list_head uclass_root; /* Head of core tree */
|
|
#endif
|
|
#ifdef CONFIG_TIMER
|
|
struct udevice *timer; /* Timer instance for Driver Model */
|
|
#endif
|
|
|
|
const void *fdt_blob; /* Our device tree, NULL if none */
|
|
void *new_fdt; /* Relocated FDT */
|
|
unsigned long fdt_size; /* Space reserved for relocated FDT */
|
|
struct jt_funcs *jt; /* jump table */
|
|
char env_buf[32]; /* buffer for getenv() before reloc. */
|
|
#ifdef CONFIG_TRACE
|
|
void *trace_buff; /* The trace buffer */
|
|
#endif
|
|
#if defined(CONFIG_SYS_I2C)
|
|
int cur_i2c_bus; /* current used i2c bus */
|
|
#endif
|
|
#ifdef CONFIG_SYS_I2C_MXC
|
|
void *srdata[10];
|
|
#endif
|
|
unsigned long timebase_h;
|
|
unsigned long timebase_l;
|
|
#ifdef CONFIG_SYS_MALLOC_F_LEN
|
|
unsigned long malloc_base; /* base address of early malloc() */
|
|
unsigned long malloc_limit; /* limit address */
|
|
unsigned long malloc_ptr; /* current address */
|
|
#endif
|
|
#ifdef CONFIG_PCI
|
|
struct pci_controller *hose; /* PCI hose for early use */
|
|
phys_addr_t pci_ram_top; /* top of region accessible to PCI */
|
|
#endif
|
|
#ifdef CONFIG_PCI_BOOTDELAY
|
|
int pcidelay_done;
|
|
#endif
|
|
struct udevice *cur_serial_dev; /* current serial device */
|
|
struct arch_global_data arch; /* architecture-specific data */
|
|
#ifdef CONFIG_CONSOLE_RECORD
|
|
struct membuff console_out; /* console output */
|
|
struct membuff console_in; /* console input */
|
|
#endif
|
|
} gd_t;
|
|
#endif
|
|
|
|
/*
|
|
* Global Data Flags - the top 16 bits are reserved for arch-specific 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 */
|
|
#define GD_FLG_SERIAL_READY 0x00100 /* Pre-reloc serial console ready */
|
|
#define GD_FLG_FULL_MALLOC_INIT 0x00200 /* Full malloc() is ready */
|
|
#define GD_FLG_SPL_INIT 0x00400 /* spl_init() has been called */
|
|
#define GD_FLG_SKIP_RELOC 0x00800 /* Don't relocate */
|
|
#define GD_FLG_RECORD 0x01000 /* Record console */
|
|
|
|
#endif /* __ASM_GENERIC_GBL_DATA_H */
|