u-boot/arch/powerpc/cpu/mpc86xx/cpu_init.c
Kumar Gala 5655136208 powerpc/86xx: Enable common SRIO init code
Add the needed defines and code to utilize the common 8xxx srio init
code to setup LAWs and modify device tree if we have SRIO enabled on a
board.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-01-14 01:32:21 -06:00

146 lines
3.7 KiB
C

/*
* Copyright 2004,2009-2011 Freescale Semiconductor, Inc.
* Jeff Brown
* Srikanth Srinivasan (srikanth.srinivasan@freescale.com)
*
* 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
*/
/*
* cpu_init.c - low level cpu init
*/
#include <config.h>
#include <common.h>
#include <mpc86xx.h>
#include <asm/mmu.h>
#include <asm/fsl_law.h>
#include <asm/fsl_serdes.h>
#include <asm/mp.h>
extern void srio_init(void);
void setup_bats(void);
DECLARE_GLOBAL_DATA_PTR;
/*
* Breathe some life into the CPU...
*
* Set up the memory map
* initialize a bunch of registers
*/
void cpu_init_f(void)
{
/* Pointer is writable since we allocated a register for it */
gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
/* Clear initial global data */
memset ((void *) gd, 0, sizeof (gd_t));
#ifdef CONFIG_FSL_LAW
init_laws();
#endif
setup_bats();
init_early_memctl_regs();
#if defined(CONFIG_FSL_DMA)
dma_init();
#endif
/* enable the timebase bit in HID0 */
set_hid0(get_hid0() | 0x4000000);
/* enable EMCP, SYNCBE | ABE bits in HID1 */
set_hid1(get_hid1() | 0x80000C00);
}
/*
* initialize higher level parts of CPU like timers
*/
int cpu_init_r(void)
{
/* needs to be in ram since code uses global static vars */
fsl_serdes_init();
#ifdef CONFIG_SYS_SRIO
srio_init();
#endif
#if defined(CONFIG_MP)
setup_mp();
#endif
return 0;
}
/* Set up BAT registers */
void setup_bats(void)
{
#if defined(CONFIG_SYS_DBAT0U) && defined(CONFIG_SYS_DBAT0L)
write_bat(DBAT0, CONFIG_SYS_DBAT0U, CONFIG_SYS_DBAT0L);
#endif
#if defined(CONFIG_SYS_IBAT0U) && defined(CONFIG_SYS_IBAT0L)
write_bat(IBAT0, CONFIG_SYS_IBAT0U, CONFIG_SYS_IBAT0L);
#endif
write_bat(DBAT1, CONFIG_SYS_DBAT1U, CONFIG_SYS_DBAT1L);
write_bat(IBAT1, CONFIG_SYS_IBAT1U, CONFIG_SYS_IBAT1L);
write_bat(DBAT2, CONFIG_SYS_DBAT2U, CONFIG_SYS_DBAT2L);
write_bat(IBAT2, CONFIG_SYS_IBAT2U, CONFIG_SYS_IBAT2L);
write_bat(DBAT3, CONFIG_SYS_DBAT3U, CONFIG_SYS_DBAT3L);
write_bat(IBAT3, CONFIG_SYS_IBAT3U, CONFIG_SYS_IBAT3L);
write_bat(DBAT4, CONFIG_SYS_DBAT4U, CONFIG_SYS_DBAT4L);
write_bat(IBAT4, CONFIG_SYS_IBAT4U, CONFIG_SYS_IBAT4L);
write_bat(DBAT5, CONFIG_SYS_DBAT5U, CONFIG_SYS_DBAT5L);
write_bat(IBAT5, CONFIG_SYS_IBAT5U, CONFIG_SYS_IBAT5L);
write_bat(DBAT6, CONFIG_SYS_DBAT6U, CONFIG_SYS_DBAT6L);
write_bat(IBAT6, CONFIG_SYS_IBAT6U, CONFIG_SYS_IBAT6L);
write_bat(DBAT7, CONFIG_SYS_DBAT7U, CONFIG_SYS_DBAT7L);
write_bat(IBAT7, CONFIG_SYS_IBAT7U, CONFIG_SYS_IBAT7L);
return;
}
#ifdef CONFIG_ADDR_MAP
/* Initialize address mapping array */
void init_addr_map(void)
{
int i;
ppc_bat_t bat = DBAT0;
phys_size_t size;
unsigned long upper, lower;
for (i = 0; i < CONFIG_SYS_NUM_ADDR_MAP; i++, bat++) {
if (read_bat(bat, &upper, &lower) != -1) {
if (!BATU_VALID(upper))
size = 0;
else
size = BATU_SIZE(upper);
addrmap_set_entry(BATU_VADDR(upper), BATL_PADDR(lower),
size, i);
}
#ifdef CONFIG_HIGH_BATS
/* High bats are not contiguous with low BAT numbers */
if (bat == DBAT3)
bat = DBAT4 - 1;
#endif
}
}
#endif