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87 lines
2.9 KiB
C
87 lines
2.9 KiB
C
/* uboot.h - declare variables and functions for U-Boot support */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2013 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GRUB_UBOOT_UBOOT_HEADER
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#define GRUB_UBOOT_UBOOT_HEADER 1
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#include <grub/types.h>
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#include <grub/dl.h>
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/* Functions. */
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void grub_uboot_mm_init (void);
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void grub_uboot_init (void);
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void grub_uboot_fini (void);
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void grub_uboot_return (int) __attribute__ ((noreturn));
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grub_addr_t grub_uboot_get_real_bss_start (void);
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grub_err_t grub_uboot_probe_hardware (void);
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extern grub_addr_t EXPORT_VAR (start_of_ram);
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grub_uint32_t EXPORT_FUNC (grub_uboot_get_machine_type) (void);
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grub_addr_t EXPORT_FUNC (grub_uboot_get_boot_data) (void);
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/*
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* The U-Boot API operates through a "syscall" interface, consisting of an
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* entry point address and a set of syscall numbers. The location of this
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* entry point is described in a structure allocated on the U-Boot heap.
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* We scan through a defined region around the hint address passed to us
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* from U-Boot.
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*/
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#define UBOOT_API_SEARCH_LEN (3 * 1024 * 1024)
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int grub_uboot_api_init (void);
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/*
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* All functions below are wrappers around the uboot_syscall() function,
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* implemented in grub-core/kern/uboot/uboot.c
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*/
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int grub_uboot_getc (void);
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int grub_uboot_tstc (void);
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void grub_uboot_putc (int c);
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void grub_uboot_puts (const char *s);
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void EXPORT_FUNC (grub_uboot_reset) (void);
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struct sys_info *grub_uboot_get_sys_info (void);
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void grub_uboot_udelay (grub_uint32_t usec);
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grub_uint32_t grub_uboot_get_timer (grub_uint32_t base);
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int EXPORT_FUNC (grub_uboot_dev_enum) (void);
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struct device_info * EXPORT_FUNC (grub_uboot_dev_get) (int index);
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int EXPORT_FUNC (grub_uboot_dev_open) (struct device_info *dev);
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int EXPORT_FUNC (grub_uboot_dev_close) (struct device_info *dev);
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int grub_uboot_dev_write (struct device_info *dev, void *buf, int *len);
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int grub_uboot_dev_read (struct device_info *dev, void *buf, grub_size_t blocks,
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grub_uint32_t start, grub_size_t * real_blocks);
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int EXPORT_FUNC (grub_uboot_dev_recv) (struct device_info *dev, void *buf,
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int size, int *real_size);
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int EXPORT_FUNC (grub_uboot_dev_send) (struct device_info *dev, void *buf,
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int size);
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char *grub_uboot_env_get (const char *name);
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void grub_uboot_env_set (const char *name, const char *value);
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#endif /* ! GRUB_UBOOT_UBOOT_HEADER */
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