mirror of
https://github.com/AsahiLinux/u-boot
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282 lines
7.1 KiB
C
282 lines
7.1 KiB
C
/*
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* (C) Copyright 2003-2004
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* (C) Copyright 2004
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* Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
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*
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* (C) Copyright 2006
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* MicroSys GmbH
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*
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* (C) Copyright 2009
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* Wolfgang Grandegger, DENX Software Engineering, wg@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program 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 this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <mpc5xxx.h>
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#include <pci.h>
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#include <netdev.h>
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#include <miiphy.h>
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#include <libfdt.h>
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#include <mb862xx.h>
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#include <video_fb.h>
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#include <asm/processor.h>
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#include <asm/io.h>
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#ifdef CONFIG_OF_LIBFDT
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#include <fdt_support.h>
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#endif /* CONFIG_OF_LIBFDT */
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/* mt46v16m16-75 */
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#ifdef CONFIG_MPC5200_DDR
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/* Settings for XLB = 132 MHz */
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#define SDRAM_MODE 0x018D0000
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#define SDRAM_EMODE 0x40090000
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#define SDRAM_CONTROL 0x714f0f00
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#define SDRAM_CONFIG1 0x73722930
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#define SDRAM_CONFIG2 0x47770000
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#define SDRAM_TAPDELAY 0x10000000
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#else
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#error SDRAM is not supported on this board
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#endif
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DECLARE_GLOBAL_DATA_PTR;
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static void sdram_start (int hi_addr)
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{
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struct mpc5xxx_sdram *sdram = (struct mpc5xxx_sdram *)MPC5XXX_SDRAM;
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long hi_addr_bit = hi_addr ? 0x01000000 : 0;
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/* unlock mode register */
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out_be32 (&sdram->ctrl, SDRAM_CONTROL | 0x80000000 | hi_addr_bit);
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/* precharge all banks */
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out_be32 (&sdram->ctrl, SDRAM_CONTROL | 0x80000002 | hi_addr_bit);
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/* set mode register: extended mode */
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out_be32 (&sdram->mode, SDRAM_EMODE);
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/* set mode register: reset DLL */
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out_be32 (&sdram->mode, SDRAM_MODE | 0x04000000);
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/* precharge all banks */
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out_be32 (&sdram->ctrl, SDRAM_CONTROL | 0x80000002 | hi_addr_bit);
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/* auto refresh */
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out_be32 (&sdram->ctrl, SDRAM_CONTROL | 0x80000004 | hi_addr_bit);
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/* set mode register */
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out_be32 (&sdram->mode, SDRAM_MODE);
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/* normal operation */
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out_be32 (&sdram->ctrl, SDRAM_CONTROL | hi_addr_bit);
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}
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/*
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* ATTENTION: Although partially referenced initdram does NOT make real
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* use of CONFIG_SYS_SDRAM_BASE. The code does not work if
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* CONFIG_SYS_SDRAM_BASE is something else than 0x00000000.
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*/
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phys_size_t initdram (int board_type)
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{
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struct mpc5xxx_mmap_ctl *mmap_ctl =
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(struct mpc5xxx_mmap_ctl *)CONFIG_SYS_MBAR;
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struct mpc5xxx_sdram *sdram = (struct mpc5xxx_sdram *)MPC5XXX_SDRAM;
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struct mpc5xxx_cdm *cdm = (struct mpc5xxx_cdm *)MPC5XXX_CDM;
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ulong dramsize = 0;
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ulong dramsize2 = 0;
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ulong test1, test2;
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/* setup SDRAM chip selects */
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out_be32 (&mmap_ctl->sdram0, 0x0000001e); /* 2G at 0x0 */
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out_be32 (&mmap_ctl->sdram1, 0x00000000); /* disabled */
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/* setup config registers */
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out_be32 (&sdram->config1, SDRAM_CONFIG1);
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out_be32 (&sdram->config2, SDRAM_CONFIG2);
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/* set tap delay */
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out_be32 (&cdm->porcfg, SDRAM_TAPDELAY);
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/* find RAM size using SDRAM CS0 only */
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sdram_start (0);
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test1 = get_ram_size ((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000);
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sdram_start (1);
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test2 = get_ram_size ((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000);
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if (test1 > test2) {
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sdram_start (0);
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dramsize = test1;
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} else {
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dramsize = test2;
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}
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/* memory smaller than 1MB is impossible */
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if (dramsize < (1 << 20))
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dramsize = 0;
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/* set SDRAM CS0 size according to the amount of RAM found */
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if (dramsize > 0)
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out_be32 (&mmap_ctl->sdram0,
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0x13 + __builtin_ffs (dramsize >> 20) - 1);
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else
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out_be32 (&mmap_ctl->sdram1, 0); /* disabled */
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/*
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* On MPC5200B we need to set the special configuration delay in the
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* DDR controller. Please refer to Freescale's AN3221 "MPC5200B SDRAM
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* Initialization and Configuration", 3.3.1 SDelay--MBAR + 0x0190:
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*
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* "The SDelay should be written to a value of 0x00000004. It is
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* required to account for changes caused by normal wafer processing
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* parameters."
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*/
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out_be32 (&sdram->sdelay, 0x04);
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return dramsize + dramsize2;
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}
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int checkboard (void)
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{
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puts ("Board: IPEK01 \n");
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return 0;
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}
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void flash_preinit (void)
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{
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struct mpc5xxx_lpb *lpb = (struct mpc5xxx_lpb *)MPC5XXX_LPB;
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/*
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* Now, when we are in RAM, enable flash write
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* access for detection process.
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* Note that CS_BOOT cannot be cleared when
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* executing in flash.
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*/
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clrbits_be32 (&lpb->cs0_cfg, 0x1); /* clear RO */
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}
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void flash_afterinit (ulong start, ulong size)
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{
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struct mpc5xxx_mmap_ctl *mmap_ctl =
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(struct mpc5xxx_mmap_ctl *)CONFIG_SYS_MBAR;
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#if defined(CONFIG_BOOT_ROM)
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/* adjust mapping */
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out_be32 (&mmap_ctl->cs1_start, START_REG (start));
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out_be32 (&mmap_ctl->cs1_stop, STOP_REG (start, size));
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#else
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/* adjust mapping */
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out_be32 (&mmap_ctl->boot_start, START_REG (start));
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out_be32 (&mmap_ctl->cs0_start, START_REG (start));
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out_be32 (&mmap_ctl->boot_stop, STOP_REG (start, size));
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out_be32 (&mmap_ctl->cs0_stop, STOP_REG (start, size));
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#endif
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}
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extern flash_info_t flash_info[]; /* info for FLASH chips */
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int misc_init_r (void)
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{
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/* adjust flash start */
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gd->bd->bi_flashstart = flash_info[0].start[0];
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return (0);
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}
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#ifdef CONFIG_PCI
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static struct pci_controller hose;
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extern void pci_mpc5xxx_init (struct pci_controller *);
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void pci_init_board (void)
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{
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pci_mpc5xxx_init (&hose);
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}
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#endif
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#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
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void ft_board_setup (void *blob, bd_t * bd)
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{
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ft_cpu_setup (blob, bd);
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fdt_fixup_memory (blob, (u64) bd->bi_memstart, (u64) bd->bi_memsize);
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}
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#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */
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int board_eth_init(bd_t *bis)
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{
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cpu_eth_init(bis); /* Built in FEC comes first */
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return pci_eth_init(bis);
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}
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#ifdef CONFIG_VIDEO
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extern GraphicDevice mb862xx;
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static const gdc_regs init_regs[] = {
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{0x0100, 0x00000900},
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{0x0020, 0x80190257},
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{0x0024, 0x00000000},
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{0x0028, 0x00000000},
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{0x002c, 0x00000000},
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{0x0110, 0x00000000},
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{0x0114, 0x00000000},
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{0x0118, 0x02570320},
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{0x0004, 0x041f0000},
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{0x0008, 0x031f031f},
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{0x000c, 0x067f0347},
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{0x0010, 0x02780000},
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{0x0014, 0x0257025c},
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{0x0018, 0x00000000},
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{0x001c, 0x02570320},
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{0x0100, 0x80010900},
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{0x0, 0x0}
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};
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const gdc_regs *board_get_regs (void)
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{
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return init_regs;
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}
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/* Returns Lime base address */
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unsigned int board_video_init (void)
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{
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if (mb862xx_probe (CONFIG_SYS_LIME_BASE) != MB862XX_TYPE_LIME)
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return 0;
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mb862xx.winSizeX = 800;
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mb862xx.winSizeY = 600;
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mb862xx.gdfIndex = GDF_15BIT_555RGB;
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mb862xx.gdfBytesPP = 2;
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return CONFIG_SYS_LIME_BASE;
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}
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#if defined(CONFIG_CONSOLE_EXTRA_INFO)
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/*
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* Return text to be printed besides the logo.
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*/
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void video_get_info_str (int line_number, char *info)
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{
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if (line_number == 1)
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strcpy (info, " Board: IPEK01");
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else
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info[0] = '\0';
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}
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#endif
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#endif /* CONFIG_VIDEO */
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