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/* hw.c - U-Boot hardware discovery */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2013 Free Software Foundation, Inc.
*
* GRUB 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 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/kernel.h>
#include <grub/memory.h>
#include <grub/misc.h>
#include <grub/mm.h>
#include <grub/offsets.h>
#include <grub/machine/kernel.h>
#include <grub/uboot/disk.h>
#include <grub/uboot/uboot.h>
#include <grub/uboot/api_public.h>
grub_addr_t start_of_ram;
/*
* grub_uboot_probe_memory():
* Queries U-Boot for available memory regions.
*
* Sets up heap near the image in memory and sets up "start_of_ram".
*/
void
grub_uboot_mm_init (void)
{
struct sys_info *si = grub_uboot_get_sys_info ();
grub_mm_init_region ((void *) grub_modules_get_end (),
GRUB_KERNEL_MACHINE_HEAP_SIZE);
if (si && (si->mr_no != 0))
{
int i;
start_of_ram = GRUB_UINT_MAX;
for (i = 0; i < si->mr_no; i++)
if ((si->mr[i].flags & MR_ATTR_MASK) == MR_ATTR_DRAM)
if (si->mr[i].start < start_of_ram)
start_of_ram = si->mr[i].start;
}
}
/*
* grub_uboot_probe_hardware():
*/
grub_err_t
grub_uboot_probe_hardware (void)
{
int devcount, i;
devcount = grub_uboot_dev_enum ();
grub_dprintf ("init", "%d devices found\n", devcount);
for (i = 0; i < devcount; i++)
{
struct device_info *devinfo = grub_uboot_dev_get (i);
grub_dprintf ("init", "device handle: %d\n", i);
grub_dprintf ("init", " cookie\t= 0x%08x\n",
(grub_uint32_t) devinfo->cookie);
if (devinfo->type & DEV_TYP_STOR)
{
grub_dprintf ("init", " type\t\t= DISK\n");
grub_ubootdisk_register (devinfo);
}
else if (devinfo->type & DEV_TYP_NET)
{
/* Dealt with in ubootnet module. */
grub_dprintf ("init", " type\t\t= NET (not supported yet)\n");
}
else
{
grub_dprintf ("init", "%s: unknown device type", __FUNCTION__);
}
}
return GRUB_ERR_NONE;
}
grub_err_t
grub_machine_mmap_iterate (grub_memory_hook_t hook, void *hook_data)
{
int i;
struct sys_info *si = grub_uboot_get_sys_info ();
if (!si || (si->mr_no < 1))
return GRUB_ERR_BUG;
/* Iterate and call `hook'. */
for (i = 0; i < si->mr_no; i++)
if ((si->mr[i].flags & MR_ATTR_MASK) == MR_ATTR_DRAM)
hook (si->mr[i].start, si->mr[i].size, GRUB_MEMORY_AVAILABLE,
hook_data);
return GRUB_ERR_NONE;
}
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