diff options
author | Mingkai Hu <Mingkai.hu@freescale.com> | 2009-09-22 14:53:21 +0800 |
---|---|---|
committer | Kumar Gala <galak@kernel.crashing.org> | 2009-09-24 12:05:26 -0500 |
commit | 234a89d911ce28e46372f555d7c14e28424f2b0d (patch) | |
tree | 2728ba5870fd5efb67bf5420e136e1fa2b71aab1 | |
parent | 266139b88b43ae1d87abb5f5431e6f57b801795f (diff) |
ppc/85xx: add cpu init config file for boot from NAND
When boot from NAND, the NAND flash must be connected to br/or0.
Also init RAM(L2 SRAM or DDR SDRAM) for load the second image to
it.
Signed-off-by: Mingkai Hu <Mingkai.hu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
-rw-r--r-- | cpu/mpc85xx/cpu_init_nand.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/cpu/mpc85xx/cpu_init_nand.c b/cpu/mpc85xx/cpu_init_nand.c new file mode 100644 index 00000000000..184cca4c543 --- /dev/null +++ b/cpu/mpc85xx/cpu_init_nand.c @@ -0,0 +1,63 @@ +/* + * Copyright 2009 Freescale Semiconductor, Inc. + * + * 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 <asm/io.h> + +void cpu_init_f(void) +{ + ccsr_lbc_t *lbc = (void *)(CONFIG_SYS_MPC85xx_LBC_ADDR); + + /* + * LCRR - Clock Ratio Register - set up local bus timing + * when needed + */ + out_be32(&lbc->lcrr, LCRR_DBYP | LCRR_CLKDIV_8); + +#if defined(CONFIG_NAND_BR_PRELIM) && defined(CONFIG_NAND_OR_PRELIM) + out_be32(&lbc->br0, CONFIG_NAND_BR_PRELIM); + out_be32(&lbc->or0, CONFIG_NAND_OR_PRELIM); +#else +#error CONFIG_NAND_BR_PRELIM, CONFIG_NAND_OR_PRELIM must be defined +#endif + +#if defined(CONFIG_SYS_RAMBOOT) && defined(CONFIG_SYS_INIT_L2_ADDR) + ccsr_l2cache_t *l2cache = (void *)CONFIG_SYS_MPC85xx_L2_ADDR; + char *l2srbar; + int i; + + out_be32(&l2cache->l2srbar0, CONFIG_SYS_INIT_L2_ADDR); + + /* set MBECCDIS=1, SBECCDIS=1 */ + out_be32(&l2cache->l2errdis, + (MPC85xx_L2ERRDIS_MBECC | MPC85xx_L2ERRDIS_SBECC)); + + /* set L2E=1 & L2SRAM=001 */ + out_be32(&l2cache->l2ctl, + (MPC85xx_L2CTL_L2E | MPC85xx_L2CTL_L2SRAM_ENTIRE)); + + /* Initialize L2 SRAM to zero */ + l2srbar = (char *)CONFIG_SYS_INIT_L2_ADDR; + for (i = 0; i < CONFIG_SYS_L2_SIZE; i++) + l2srbar[i] = 0; +#endif +} |