mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 02:51:00 +00:00
a38de083d2
The AVR32A architecture (which AT32UC3A-series is based on) has a different memory layout than the AVR32B-architecture. This patch moves addrspace.h to an arch-dependent directory in preparation for AT32UC3A-support. It also moves some address-space manipulation functions from io.h to addrspace.h. Signed-off-by: Gunnar Rangoy <gunnar@rangoy.com> Signed-off-by: Paul Driveklepp <pauldriveklepp@gmail.com> Signed-off-by: Olav Morken <olavmrk@gmail.com> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
209 lines
4.9 KiB
C
209 lines
4.9 KiB
C
/*
|
|
* Copyright (C) 2004-2006 Atmel Corporation
|
|
*
|
|
* 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
|
|
*/
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <image.h>
|
|
#include <zlib.h>
|
|
#include <asm/byteorder.h>
|
|
#include <asm/arch/addrspace.h>
|
|
#include <asm/io.h>
|
|
#include <asm/setup.h>
|
|
#include <asm/arch/clk.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
/* CPU-specific hook to allow flushing of caches, etc. */
|
|
extern void prepare_to_boot(void);
|
|
|
|
static struct tag *setup_start_tag(struct tag *params)
|
|
{
|
|
params->hdr.tag = ATAG_CORE;
|
|
params->hdr.size = tag_size(tag_core);
|
|
|
|
params->u.core.flags = 0;
|
|
params->u.core.pagesize = 4096;
|
|
params->u.core.rootdev = 0;
|
|
|
|
return tag_next(params);
|
|
}
|
|
|
|
static struct tag *setup_memory_tags(struct tag *params)
|
|
{
|
|
bd_t *bd = gd->bd;
|
|
int i;
|
|
|
|
for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
|
|
params->hdr.tag = ATAG_MEM;
|
|
params->hdr.size = tag_size(tag_mem_range);
|
|
|
|
params->u.mem_range.addr = bd->bi_dram[i].start;
|
|
params->u.mem_range.size = bd->bi_dram[i].size;
|
|
|
|
params = tag_next(params);
|
|
}
|
|
|
|
return params;
|
|
}
|
|
|
|
static struct tag *setup_commandline_tag(struct tag *params, char *cmdline)
|
|
{
|
|
if (!cmdline)
|
|
return params;
|
|
|
|
/* eat leading white space */
|
|
while (*cmdline == ' ') cmdline++;
|
|
|
|
/*
|
|
* Don't include tags for empty command lines; let the kernel
|
|
* use its default command line.
|
|
*/
|
|
if (*cmdline == '\0')
|
|
return params;
|
|
|
|
params->hdr.tag = ATAG_CMDLINE;
|
|
params->hdr.size =
|
|
(sizeof (struct tag_header) + strlen(cmdline) + 1 + 3) >> 2;
|
|
strcpy(params->u.cmdline.cmdline, cmdline);
|
|
|
|
return tag_next(params);
|
|
}
|
|
|
|
static struct tag *setup_ramdisk_tag(struct tag *params,
|
|
unsigned long rd_start,
|
|
unsigned long rd_end)
|
|
{
|
|
if (rd_start == rd_end)
|
|
return params;
|
|
|
|
params->hdr.tag = ATAG_RDIMG;
|
|
params->hdr.size = tag_size(tag_mem_range);
|
|
|
|
params->u.mem_range.addr = rd_start;
|
|
params->u.mem_range.size = rd_end - rd_start;
|
|
|
|
return tag_next(params);
|
|
}
|
|
|
|
static struct tag *setup_clock_tags(struct tag *params)
|
|
{
|
|
params->hdr.tag = ATAG_CLOCK;
|
|
params->hdr.size = tag_size(tag_clock);
|
|
params->u.clock.clock_id = ACLOCK_BOOTCPU;
|
|
params->u.clock.clock_flags = 0;
|
|
params->u.clock.clock_hz = gd->cpu_hz;
|
|
|
|
#ifdef CONFIG_AT32AP7000
|
|
/*
|
|
* New kernels don't need this, but we should be backwards
|
|
* compatible for a while...
|
|
*/
|
|
params = tag_next(params);
|
|
|
|
params->hdr.tag = ATAG_CLOCK;
|
|
params->hdr.size = tag_size(tag_clock);
|
|
params->u.clock.clock_id = ACLOCK_HSB;
|
|
params->u.clock.clock_flags = 0;
|
|
params->u.clock.clock_hz = get_hsb_clk_rate();
|
|
#endif
|
|
|
|
return tag_next(params);
|
|
}
|
|
|
|
static struct tag *setup_ethernet_tag(struct tag *params,
|
|
char *addr, int index)
|
|
{
|
|
char *s, *e;
|
|
int i;
|
|
|
|
params->hdr.tag = ATAG_ETHERNET;
|
|
params->hdr.size = tag_size(tag_ethernet);
|
|
|
|
params->u.ethernet.mac_index = index;
|
|
params->u.ethernet.mii_phy_addr = gd->bd->bi_phy_id[index];
|
|
|
|
s = addr;
|
|
for (i = 0; i < 6; i++) {
|
|
params->u.ethernet.hw_address[i] = simple_strtoul(s, &e, 16);
|
|
s = e + 1;
|
|
}
|
|
|
|
return tag_next(params);
|
|
}
|
|
|
|
static struct tag *setup_ethernet_tags(struct tag *params)
|
|
{
|
|
char name[16] = "ethaddr";
|
|
char *addr;
|
|
int i = 0;
|
|
|
|
do {
|
|
addr = getenv(name);
|
|
if (addr)
|
|
params = setup_ethernet_tag(params, addr, i);
|
|
sprintf(name, "eth%daddr", ++i);
|
|
} while (i < 4);
|
|
|
|
return params;
|
|
}
|
|
|
|
static void setup_end_tag(struct tag *params)
|
|
{
|
|
params->hdr.tag = ATAG_NONE;
|
|
params->hdr.size = 0;
|
|
}
|
|
|
|
int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
|
|
{
|
|
void (*theKernel)(int magic, void *tagtable);
|
|
struct tag *params, *params_start;
|
|
char *commandline = getenv("bootargs");
|
|
|
|
if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
|
|
return 1;
|
|
|
|
theKernel = (void *)images->ep;
|
|
|
|
show_boot_progress (15);
|
|
|
|
params = params_start = (struct tag *)gd->bd->bi_boot_params;
|
|
params = setup_start_tag(params);
|
|
params = setup_memory_tags(params);
|
|
if (images->rd_start) {
|
|
params = setup_ramdisk_tag(params,
|
|
PHYSADDR(images->rd_start),
|
|
PHYSADDR(images->rd_end));
|
|
}
|
|
params = setup_commandline_tag(params, commandline);
|
|
params = setup_clock_tags(params);
|
|
params = setup_ethernet_tags(params);
|
|
setup_end_tag(params);
|
|
|
|
printf("\nStarting kernel at %p (params at %p)...\n\n",
|
|
theKernel, params_start);
|
|
|
|
prepare_to_boot();
|
|
|
|
theKernel(ATAG_MAGIC, params_start);
|
|
/* does not return */
|
|
|
|
return 1;
|
|
}
|