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https://github.com/AsahiLinux/u-boot
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1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
203 lines
4.8 KiB
C
203 lines
4.8 KiB
C
/*
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* (C) Copyright 2003
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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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* Eric Schumann, Phytec Messtechnik GmbH
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*
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* SPDX-License-Identifier: GPL-2.0+
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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 <asm/io.h>
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#include "mt46v32m16-75.h"
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#ifndef CONFIG_SYS_RAMBOOT
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static void sdram_start(int hi_addr)
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{
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volatile struct mpc5xxx_cdm *cdm =
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(struct mpc5xxx_cdm *)MPC5XXX_CDM;
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volatile struct mpc5xxx_sdram *sdram =
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(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,
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(SDRAM_CONTROL | 0x80000000 | hi_addr_bit));
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/* precharge all banks */
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out_be32 (&sdram->ctrl,
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(SDRAM_CONTROL | 0x80000002 | hi_addr_bit));
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#ifdef SDRAM_DDR
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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,
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(SDRAM_MODE | 0x04000000));
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#endif
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/* precharge all banks */
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out_be32 (&sdram->ctrl,
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(SDRAM_CONTROL | 0x80000002 | hi_addr_bit));
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/* auto refresh */
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out_be32 (&sdram->ctrl,
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(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,
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(SDRAM_CONTROL | hi_addr_bit));
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/* set CDM clock enable register, set MPC5200B SDRAM bus */
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/* to reduced driver strength */
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out_be32 (&cdm->clock_enable, (0x00CFFFFF));
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}
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#endif
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/*
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* ATTENTION: Although partially referenced initdram does NOT make
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* real use of CONFIG_SYS_SDRAM_BASE. The code does not
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* work if CONFIG_SYS_SDRAM_BASE
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* 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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volatile struct mpc5xxx_mmap_ctl *mm =
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(struct mpc5xxx_mmap_ctl *)CONFIG_SYS_MBAR;
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volatile struct mpc5xxx_cdm *cdm =
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(struct mpc5xxx_cdm *)MPC5XXX_CDM;
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volatile struct mpc5xxx_sdram *sdram =
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(struct mpc5xxx_sdram *)MPC5XXX_SDRAM;
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ulong dramsize = 0;
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ulong dramsize2 = 0;
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#ifndef CONFIG_SYS_RAMBOOT
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ulong test1, test2;
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/* setup SDRAM chip selects */
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/* 256MB at 0x0 */
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out_be32 (&mm->sdram0, 0x0000001b);
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/* disabled */
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out_be32 (&mm->sdram1, 0x10000000);
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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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#if defined(SDRAM_DDR) && defined(SDRAM_TAPDELAY)
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/* set tap delay */
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out_be32 (&cdm->porcfg, SDRAM_TAPDELAY);
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#endif
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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, 0x10000000);
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sdram_start(1);
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test2 = get_ram_size((long *) CONFIG_SYS_SDRAM_BASE, 0x10000000);
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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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/* 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 (&mm->sdram0,
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(0x13 + __builtin_ffs(dramsize >> 20) - 1));
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} else {
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/* disabled */
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out_be32 (&mm->sdram0, 0);
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}
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#else /* CONFIG_SYS_RAMBOOT */
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/* retrieve size of memory connected to SDRAM CS0 */
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dramsize = in_be32(&mm->sdram0) & 0xFF;
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if (dramsize >= 0x13)
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dramsize = (1 << (dramsize - 0x13)) << 20;
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else
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dramsize = 0;
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/* retrieve size of memory connected to SDRAM CS1 */
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dramsize2 = in_be32(&mm->sdram1) & 0xFF;
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if (dramsize2 >= 0x13)
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dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
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else
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dramsize2 = 0;
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#endif /* CONFIG_SYS_RAMBOOT */
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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: phyCORE-MPC5200B-tiny\n");
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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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}
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#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */
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#if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET)
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#define GPIO_PSC2_4 0x02000000UL
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void init_ide_reset(void)
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{
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volatile struct mpc5xxx_wu_gpio *wu_gpio =
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(struct mpc5xxx_wu_gpio *)MPC5XXX_WU_GPIO;
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debug("init_ide_reset\n");
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/* Configure PSC2_4 as GPIO output for ATA reset */
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setbits_be32(&wu_gpio->enable, GPIO_PSC2_4);
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setbits_be32(&wu_gpio->ddr, GPIO_PSC2_4);
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/* Deassert reset */
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setbits_be32(&wu_gpio->dvo, GPIO_PSC2_4);
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}
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void ide_set_reset(int idereset)
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{
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volatile struct mpc5xxx_wu_gpio *wu_gpio =
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(struct mpc5xxx_wu_gpio *)MPC5XXX_WU_GPIO;
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debug("ide_reset(%d)\n", idereset);
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if (idereset) {
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clrbits_be32(&wu_gpio->dvo, GPIO_PSC2_4);
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/* Make a delay. MPC5200 spec says 25 usec min */
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udelay(500000);
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} else
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setbits_be32(&wu_gpio->dvo, GPIO_PSC2_4);
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}
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#endif /* defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET) */
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