diff options
Diffstat (limited to 'qemu/roms/u-boot/board/freescale/m53017evb/m53017evb.c')
-rw-r--r-- | qemu/roms/u-boot/board/freescale/m53017evb/m53017evb.c | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/board/freescale/m53017evb/m53017evb.c b/qemu/roms/u-boot/board/freescale/m53017evb/m53017evb.c new file mode 100644 index 000000000..dbe886b03 --- /dev/null +++ b/qemu/roms/u-boot/board/freescale/m53017evb/m53017evb.c @@ -0,0 +1,80 @@ +/* + * (C) Copyright 2000-2003 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * Copyright (C) 2004-2008, 2012 Freescale Semiconductor, Inc. + * TsiChung Liew (Tsi-Chung.Liew@freescale.com) + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <config.h> +#include <common.h> +#include <asm/immap.h> +#include <asm/io.h> + +DECLARE_GLOBAL_DATA_PTR; + +int checkboard(void) +{ + puts("Board: "); + puts("Freescale M53017EVB\n"); + return 0; +}; + +phys_size_t initdram(int board_type) +{ + sdram_t *sdram = (sdram_t *)(MMAP_SDRAM); + u32 dramsize, i; + + dramsize = CONFIG_SYS_SDRAM_SIZE * 0x100000; + + for (i = 0x13; i < 0x20; i++) { + if (dramsize == (1 << i)) + break; + } + i--; + + out_be32(&sdram->cs0, CONFIG_SYS_SDRAM_BASE | i); +#ifdef CONFIG_SYS_SDRAM_BASE1 + out_be32(&sdram->cs1, CONFIG_SYS_SDRAM_BASE | i); +#endif + out_be32(&sdram->cfg1, CONFIG_SYS_SDRAM_CFG1); + out_be32(&sdram->cfg2, CONFIG_SYS_SDRAM_CFG2); + + udelay(500); + + /* Issue PALL */ + out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 2); + asm("nop"); + + /* Perform two refresh cycles */ + out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 4); + out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 4); + asm("nop"); + + /* Issue LEMR */ + out_be32(&sdram->mode, CONFIG_SYS_SDRAM_MODE); + asm("nop"); + out_be32(&sdram->mode, CONFIG_SYS_SDRAM_EMOD); + asm("nop"); + + out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 2); + asm("nop"); + + out_be32(&sdram->ctrl, + (CONFIG_SYS_SDRAM_CTRL & ~0x80000000) | 0x10000c00); + asm("nop"); + + udelay(100); + + return dramsize; +}; + +int testdram(void) +{ + /* TODO: XXX XXX XXX */ + printf("DRAM test not implemented!\n"); + + return (0); +} |