diff options
Diffstat (limited to 'qemu/roms/u-boot/board/freescale/m5275evb')
4 files changed, 202 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/board/freescale/m5275evb/Makefile b/qemu/roms/u-boot/board/freescale/m5275evb/Makefile new file mode 100644 index 000000000..d285c1459 --- /dev/null +++ b/qemu/roms/u-boot/board/freescale/m5275evb/Makefile @@ -0,0 +1,8 @@ +# +# (C) Copyright 2000-2003 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-y = m5275evb.o diff --git a/qemu/roms/u-boot/board/freescale/m5275evb/config.mk b/qemu/roms/u-boot/board/freescale/m5275evb/config.mk new file mode 100644 index 000000000..1af25e158 --- /dev/null +++ b/qemu/roms/u-boot/board/freescale/m5275evb/config.mk @@ -0,0 +1,9 @@ +# +# (C) Copyright 2000-2003 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# Coldfire contribution by Bernhard Kuhn <bkuhn@metrowerks.com> +# +# SPDX-License-Identifier: GPL-2.0+ +# + +CONFIG_SYS_TEXT_BASE = 0xffe00000 diff --git a/qemu/roms/u-boot/board/freescale/m5275evb/m5275evb.c b/qemu/roms/u-boot/board/freescale/m5275evb/m5275evb.c new file mode 100644 index 000000000..16083d1bc --- /dev/null +++ b/qemu/roms/u-boot/board/freescale/m5275evb/m5275evb.c @@ -0,0 +1,100 @@ +/* + * (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); +} diff --git a/qemu/roms/u-boot/board/freescale/m5275evb/u-boot.lds b/qemu/roms/u-boot/board/freescale/m5275evb/u-boot.lds new file mode 100644 index 000000000..3112cbe4e --- /dev/null +++ b/qemu/roms/u-boot/board/freescale/m5275evb/u-boot.lds @@ -0,0 +1,85 @@ +/* + * (C) Copyright 2000-2003 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +OUTPUT_ARCH(m68k) + +SECTIONS +{ + .text : + { + arch/m68k/cpu/mcf52x2/start.o (.text*) + + . = DEFINED(env_offset) ? env_offset : .; + common/env_embedded.o (.text) + + *(.text*) + } + _etext = .; + PROVIDE (etext = .); + .rodata : + { + *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) + } + + /* Read-write section, merged into data segment: */ + . = (. + 0x00FF) & 0xFFFFFF00; + _erotext = .; + PROVIDE (erotext = .); + + .reloc : + { + __got_start = .; + KEEP(*(.got)) + __got_end = .; + _GOT2_TABLE_ = .; + KEEP(*(.got2)) + _FIXUP_TABLE_ = .; + KEEP(*(.fixup)) + } + __got2_entries = (_FIXUP_TABLE_ - _GOT2_TABLE_) >>2; + __fixup_entries = (. - _FIXUP_TABLE_)>>2; + + .data : + { + *(.data*) + *(.sdata*) + } + _edata = .; + PROVIDE (edata = .); + + . = .; + + . = ALIGN(4); + .u_boot_list : { + KEEP(*(SORT(.u_boot_list*))); + } + + . = .; + __start___ex_table = .; + __ex_table : { *(__ex_table) } + __stop___ex_table = .; + + . = ALIGN(256); + __init_begin = .; + .text.init : { *(.text.init) } + .data.init : { *(.data.init) } + . = ALIGN(256); + __init_end = .; + + __bss_start = .; + .bss (NOLOAD) : + { + _sbss = .; + *(.bss*) + *(.sbss*) + *(COMMON) + . = ALIGN(4); + _ebss = .; + } + __bss_end = . ; + PROVIDE (end = .); +} |