diff options
Diffstat (limited to 'qemu/roms/u-boot/board/freescale/m5275evb/m5275evb.c')
-rw-r--r-- | qemu/roms/u-boot/board/freescale/m5275evb/m5275evb.c | 100 |
1 files changed, 0 insertions, 100 deletions
diff --git a/qemu/roms/u-boot/board/freescale/m5275evb/m5275evb.c b/qemu/roms/u-boot/board/freescale/m5275evb/m5275evb.c deleted file mode 100644 index 16083d1bc..000000000 --- a/qemu/roms/u-boot/board/freescale/m5275evb/m5275evb.c +++ /dev/null @@ -1,100 +0,0 @@ -/* - * (C) Copyright 2000-2003 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * Copyright (C) 2005-2008 Arthur Shipkowski (art@videon-central.com) - * - * Copyright (C) 2012 Freescale Semiconductor, Inc. All Rights Reserved. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <asm/immap.h> -#include <asm/io.h> - -#define PERIOD 13 /* system bus period in ns */ -#define SDRAM_TREFI 7800 /* in ns */ - -int checkboard(void) -{ - puts("Board: "); - puts("Freescale MCF5275 EVB\n"); - return 0; -}; - -phys_size_t initdram(int board_type) -{ - sdramctrl_t *sdp = (sdramctrl_t *)(MMAP_SDRAM); - gpio_t *gpio_reg = (gpio_t *)(MMAP_GPIO); - - /* Enable SDRAM */ - out_be16(&gpio_reg->par_sdram, 0x3FF); - - /* Set up chip select */ - out_be32(&sdp->sdbar0, CONFIG_SYS_SDRAM_BASE); - out_be32(&sdp->sdbmr0, MCF_SDRAMC_SDMRn_BAM_32M | MCF_SDRAMC_SDMRn_V); - - /* Set up timing */ - out_be32(&sdp->sdcfg1, 0x83711630); - out_be32(&sdp->sdcfg2, 0x46770000); - - /* Enable clock */ - out_be32(&sdp->sdcr, MCF_SDRAMC_SDCR_MODE_EN | MCF_SDRAMC_SDCR_CKE); - - /* Set precharge */ - setbits_be32(&sdp->sdcr, MCF_SDRAMC_SDCR_IPALL); - - /* Dummy write to start SDRAM */ - *((volatile unsigned long *)CONFIG_SYS_SDRAM_BASE) = 0xa5a59696; - - /* Send LEMR */ - setbits_be32(&sdp->sdmr, - MCF_SDRAMC_SDMR_BNKAD_LEMR | MCF_SDRAMC_SDMR_AD(0x0) | - MCF_SDRAMC_SDMR_CMD); - *((volatile unsigned long *)CONFIG_SYS_SDRAM_BASE) = 0xa5a59696; - - /* Send LMR */ - out_be32(&sdp->sdmr, 0x058d0000); - *((volatile unsigned long *)CONFIG_SYS_SDRAM_BASE) = 0xa5a59696; - - /* Stop sending commands */ - clrbits_be32(&sdp->sdmr, MCF_SDRAMC_SDMR_CMD); - - /* Set precharge */ - setbits_be32(&sdp->sdcr, MCF_SDRAMC_SDCR_IPALL); - *((volatile unsigned long *)CONFIG_SYS_SDRAM_BASE) = 0xa5a59696; - - /* Stop manual precharge, send 2 IREF */ - clrbits_be32(&sdp->sdcr, MCF_SDRAMC_SDCR_IPALL); - setbits_be32(&sdp->sdcr, MCF_SDRAMC_SDCR_IREF); - *((volatile unsigned long *)CONFIG_SYS_SDRAM_BASE) = 0xa5a59696; - *((volatile unsigned long *)CONFIG_SYS_SDRAM_BASE) = 0xa5a59696; - - - out_be32(&sdp->sdmr, 0x018d0000); - *((volatile unsigned long *)CONFIG_SYS_SDRAM_BASE) = 0xa5a59696; - - /* Stop sending commands */ - clrbits_be32(&sdp->sdmr, MCF_SDRAMC_SDMR_CMD); - clrbits_be32(&sdp->sdcr, MCF_SDRAMC_SDCR_MODE_EN); - - /* Turn on auto refresh, lock SDMR */ - out_be32(&sdp->sdcr, - MCF_SDRAMC_SDCR_CKE - | MCF_SDRAMC_SDCR_REF - | MCF_SDRAMC_SDCR_MUX(1) - /* 1 added to round up */ - | MCF_SDRAMC_SDCR_RCNT((SDRAM_TREFI/(PERIOD*64)) - 1 + 1) - | MCF_SDRAMC_SDCR_DQS_OE(0x3)); - - return CONFIG_SYS_SDRAM_SIZE * 1024 * 1024; -}; - -int testdram(void) -{ - /* TODO: XXX XXX XXX */ - printf("DRAM test not implemented!\n"); - - return (0); -} |