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151 lines
3.6 KiB
C
151 lines
3.6 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 uboot_return (int) __attribute__ ((noreturn));
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grub_addr_t 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 (uboot_get_machine_type) (void);
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grub_addr_t EXPORT_FUNC (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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#include <grub/uboot/api_public.h>
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#define UBOOT_API_SEARCH_LEN (3 * 1024 * 1024)
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int uboot_api_init (void);
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/* All functions below are wrappers around the uboot_syscall() function */
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/*
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* int API_getc(int *c)
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*/
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int uboot_getc (void);
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/*
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* int API_tstc(int *c)
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*/
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int uboot_tstc (void);
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/*
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* int API_putc(char *ch)
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*/
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void uboot_putc (int c);
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/*
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* int API_puts(const char *s)
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*/
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void uboot_puts (const char *s);
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/*
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* int API_reset(void)
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*/
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void EXPORT_FUNC (uboot_reset) (void);
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/*
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* int API_get_sys_info(struct sys_info *si)
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*
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* fill out the sys_info struct containing selected parameters about the
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* machine
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*/
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struct sys_info *uboot_get_sys_info (void);
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/*
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* int API_udelay(unsigned long *udelay)
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*/
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void uboot_udelay (grub_uint32_t usec);
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/*
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* int API_get_timer(unsigned long *current, unsigned long *base)
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*/
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grub_uint32_t uboot_get_timer (grub_uint32_t base);
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/*
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* int API_dev_enum(struct device_info *)
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*/
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int uboot_dev_enum (void);
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struct device_info *uboot_dev_get (int handle);
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/*
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* int API_dev_open(struct device_info *)
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*/
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int uboot_dev_open (int handle);
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/*
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* int API_dev_close(struct device_info *)
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*/
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int uboot_dev_close (int handle);
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/*
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* Notice: this is for sending network packets only, as U-Boot does not
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* support writing to storage at the moment (12.2007)
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*
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* int API_dev_write(struct device_info *di, void *buf, int *len)
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*/
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int uboot_dev_write (int handle, void *buf, int *len);
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/*
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* int API_dev_read(
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* struct device_info *di,
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* void *buf,
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* size_t *len,
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* unsigned long *start
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* size_t *act_len
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* )
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*/
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int uboot_dev_read (int handle, void *buf, lbasize_t blocks,
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lbastart_t start, lbasize_t * real_blocks);
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int uboot_dev_recv (int handle, void *buf, int size, int *real_size);
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int uboot_dev_send (int handle, void *buf, int size);
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/*
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* int API_env_get(const char *name, char **value)
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*/
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char *uboot_env_get (const char *name);
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/*
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* int API_env_set(const char *name, const char *value)
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*/
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void uboot_env_set (const char *name, const char *value);
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#endif /* ! GRUB_UBOOT_UBOOT_HEADER */
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