diff options
Diffstat (limited to 'board/freescale/mpc8313erdb/sdram.c')
| -rw-r--r-- | board/freescale/mpc8313erdb/sdram.c | 129 |
1 files changed, 0 insertions, 129 deletions
diff --git a/board/freescale/mpc8313erdb/sdram.c b/board/freescale/mpc8313erdb/sdram.c deleted file mode 100644 index f146ae5d43..0000000000 --- a/board/freescale/mpc8313erdb/sdram.c +++ /dev/null @@ -1,129 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Copyright (C) Freescale Semiconductor, Inc. 2006-2007 - * - * Authors: Nick.Spence@freescale.com - * Wilson.Lo@freescale.com - * scottwood@freescale.com - */ - -#include <common.h> -#include <init.h> -#include <mpc83xx.h> -#include <spd_sdram.h> -#include <asm/global_data.h> -#include <linux/delay.h> - -#include <asm/bitops.h> -#include <asm/io.h> - -#include <asm/processor.h> - -DECLARE_GLOBAL_DATA_PTR; - -#ifndef CONFIG_SYS_8313ERDB_BROKEN_PMC -static void resume_from_sleep(void) -{ - u32 magic = *(u32 *)0; - - typedef void (*func_t)(void); - func_t resume = *(func_t *)4; - - if (magic == 0xf5153ae5) - resume(); - - gd->flags &= ~GD_FLG_SILENT; - puts("\nResume from sleep failed: bad magic word\n"); -} -#endif - -/* Fixed sdram init -- doesn't use serial presence detect. - * - * This is useful for faster booting in configs where the RAM is unlikely - * to be changed, or for things like NAND booting where space is tight. - */ -static long fixed_sdram(void) -{ - u32 msize = CONFIG_SYS_DDR_SIZE * 1024 * 1024; - -#ifndef CONFIG_SYS_RAMBOOT - volatile immap_t *im = (volatile immap_t *)CONFIG_SYS_IMMR; - u32 msize_log2 = __ilog2(msize); - - im->sysconf.ddrlaw[0].bar = CONFIG_SYS_SDRAM_BASE & 0xfffff000; - im->sysconf.ddrlaw[0].ar = LBLAWAR_EN | (msize_log2 - 1); - im->sysconf.ddrcdr = CONFIG_SYS_DDRCDR_VALUE; - - /* - * Erratum DDR3 requires a 50ms delay after clearing DDRCDR[DDR_cfg], - * or the DDR2 controller may fail to initialize correctly. - */ - __udelay(50000); - -#if ((CONFIG_SYS_SDRAM_BASE & 0x00FFFFFF) != 0) -#warning Chip select bounds is only configurable in 16MB increments -#endif - im->ddr.csbnds[0].csbnds = - ((CONFIG_SYS_SDRAM_BASE >> CSBNDS_SA_SHIFT) & CSBNDS_SA) | - (((CONFIG_SYS_SDRAM_BASE + msize - 1) >> CSBNDS_EA_SHIFT) & - CSBNDS_EA); - im->ddr.cs_config[0] = CONFIG_SYS_DDR_CS0_CONFIG; - - /* Currently we use only one CS, so disable the other bank. */ - im->ddr.cs_config[1] = 0; - - im->ddr.sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CNTL; - im->ddr.timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3; - im->ddr.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1; - im->ddr.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2; - im->ddr.timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0; - -#ifndef CONFIG_SYS_8313ERDB_BROKEN_PMC - if (im->pmc.pmccr1 & PMCCR1_POWER_OFF) - im->ddr.sdram_cfg = CONFIG_SYS_SDRAM_CFG | SDRAM_CFG_BI; - else -#endif - im->ddr.sdram_cfg = CONFIG_SYS_SDRAM_CFG; - - im->ddr.sdram_cfg2 = CONFIG_SYS_SDRAM_CFG2; - im->ddr.sdram_mode = CONFIG_SYS_DDR_MODE; - im->ddr.sdram_mode2 = CONFIG_SYS_DDR_MODE_2; - - im->ddr.sdram_interval = CONFIG_SYS_DDR_INTERVAL; - sync(); - - /* enable DDR controller */ - im->ddr.sdram_cfg |= SDRAM_CFG_MEM_EN; -#endif - - return msize; -} - -int dram_init(void) -{ - volatile immap_t *im = (volatile immap_t *)CONFIG_SYS_IMMR; - volatile fsl_lbc_t *lbc = &im->im_lbc; - u32 msize; - - if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im) - return -ENXIO; - - /* DDR SDRAM - Main SODIMM */ - msize = fixed_sdram(); - - /* Local Bus setup lbcr and mrtpr */ - lbc->lbcr = (0x00040000 | (0xFF << LBCR_BMT_SHIFT) | 0xF); - /* LB refresh timer prescal, 266MHz/32 */ - lbc->mrtpr = 0x20000000; - sync(); - -#ifndef CONFIG_SYS_8313ERDB_BROKEN_PMC - if (im->pmc.pmccr1 & PMCCR1_POWER_OFF) - resume_from_sleep(); -#endif - - /* return total bus SDRAM size(bytes) -- DDR */ - gd->ram_size = msize; - - return 0; -} |