// SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2008 * Sergei Poselenov, Emcraft Systems, sposelenov@emcraft.com. */ #include <common.h> #include <init.h> #include <asm/processor.h> #include <asm/immap_85xx.h> #include <fsl_ddr_sdram.h> #include <asm/processor.h> #include <asm/mmu.h> #include <spd_sdram.h> #include <linux/delay.h> #if !defined(CONFIG_SPD_EEPROM) /* * Autodetect onboard DDR SDRAM on 85xx platforms * * NOTE: Some of the hardcoded values are hardware dependant, * so this should be extended for other future boards * using this routine! */ phys_size_t fixed_sdram(void) { struct ccsr_ddr __iomem *ddr = (struct ccsr_ddr __iomem *)(CONFIG_SYS_FSL_DDR_ADDR); /* * Disable memory controller. */ ddr->cs0_config = 0; ddr->sdram_cfg = 0; ddr->cs0_bnds = CONFIG_SYS_DDR_CS0_BNDS; ddr->cs0_config = CONFIG_SYS_DDR_CS0_CONFIG; ddr->timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0; ddr->timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1; ddr->timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2; ddr->sdram_mode = CONFIG_SYS_DDR_MODE; ddr->sdram_interval = CONFIG_SYS_DDR_INTERVAL; ddr->sdram_cfg_2 = CONFIG_SYS_DDR_CONFIG_2; ddr->sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CONTROL; asm ("sync;isync;msync"); udelay(1000); ddr->sdram_cfg = CONFIG_SYS_DDR_CONFIG; asm ("sync; isync; msync"); udelay(1000); if (get_ram_size(0, CONFIG_SYS_SDRAM_SIZE<<20) == CONFIG_SYS_SDRAM_SIZE<<20) { /* * OK, size detected -> all done */ return CONFIG_SYS_SDRAM_SIZE<<20; } return 0; /* nothing found ! */ } #endif #if defined(CONFIG_SYS_DRAM_TEST) int testdram(void) { uint *pstart = (uint *) CONFIG_SYS_MEMTEST_START; uint *pend = (uint *) CONFIG_SYS_MEMTEST_END; uint *p; printf ("SDRAM test phase 1:\n"); for (p = pstart; p < pend; p++) *p = 0xaaaaaaaa; for (p = pstart; p < pend; p++) { if (*p != 0xaaaaaaaa) { printf ("SDRAM test fails at: %08x\n", (uint) p); return 1; } } printf ("SDRAM test phase 2:\n"); for (p = pstart; p < pend; p++) *p = 0x55555555; for (p = pstart; p < pend; p++) { if (*p != 0x55555555) { printf ("SDRAM test fails at: %08x\n", (uint) p); return 1; } } printf ("SDRAM test passed.\n"); return 0; } #endif