diff options
Diffstat (limited to 'arch/powerpc/cpu/mpc8xxx/ddr/util.c')
-rw-r--r-- | arch/powerpc/cpu/mpc8xxx/ddr/util.c | 264 |
1 files changed, 0 insertions, 264 deletions
diff --git a/arch/powerpc/cpu/mpc8xxx/ddr/util.c b/arch/powerpc/cpu/mpc8xxx/ddr/util.c deleted file mode 100644 index acfe1f095f..0000000000 --- a/arch/powerpc/cpu/mpc8xxx/ddr/util.c +++ /dev/null @@ -1,264 +0,0 @@ -/* - * Copyright 2008-2012 Freescale Semiconductor, Inc. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * Version 2 as published by the Free Software Foundation. - */ - -#include <common.h> -#include <asm/fsl_law.h> -#include <div64.h> - -#include "ddr.h" - -/* To avoid 64-bit full-divides, we factor this here */ -#define ULL_2E12 2000000000000ULL -#define UL_5POW12 244140625UL -#define UL_2POW13 (1UL << 13) - -#define ULL_8FS 0xFFFFFFFFULL - -/* - * Round up mclk_ps to nearest 1 ps in memory controller code - * if the error is 0.5ps or more. - * - * If an imprecise data rate is too high due to rounding error - * propagation, compute a suitably rounded mclk_ps to compute - * a working memory controller configuration. - */ -unsigned int get_memory_clk_period_ps(void) -{ - unsigned int data_rate = get_ddr_freq(0); - unsigned int result; - - /* Round to nearest 10ps, being careful about 64-bit multiply/divide */ - unsigned long long rem, mclk_ps = ULL_2E12; - - /* Now perform the big divide, the result fits in 32-bits */ - rem = do_div(mclk_ps, data_rate); - result = (rem >= (data_rate >> 1)) ? mclk_ps + 1 : mclk_ps; - - return result; -} - -/* Convert picoseconds into DRAM clock cycles (rounding up if needed). */ -unsigned int picos_to_mclk(unsigned int picos) -{ - unsigned long long clks, clks_rem; - unsigned long data_rate = get_ddr_freq(0); - - /* Short circuit for zero picos */ - if (!picos) - return 0; - - /* First multiply the time by the data rate (32x32 => 64) */ - clks = picos * (unsigned long long)data_rate; - /* - * Now divide by 5^12 and track the 32-bit remainder, then divide - * by 2*(2^12) using shifts (and updating the remainder). - */ - clks_rem = do_div(clks, UL_5POW12); - clks_rem += (clks & (UL_2POW13-1)) * UL_5POW12; - clks >>= 13; - - /* If we had a remainder greater than the 1ps error, then round up */ - if (clks_rem > data_rate) - clks++; - - /* Clamp to the maximum representable value */ - if (clks > ULL_8FS) - clks = ULL_8FS; - return (unsigned int) clks; -} - -unsigned int mclk_to_picos(unsigned int mclk) -{ - return get_memory_clk_period_ps() * mclk; -} - -void -__fsl_ddr_set_lawbar(const common_timing_params_t *memctl_common_params, - unsigned int law_memctl, - unsigned int ctrl_num) -{ - unsigned long long base = memctl_common_params->base_address; - unsigned long long size = memctl_common_params->total_mem; - - /* - * If no DIMMs on this controller, do not proceed any further. - */ - if (!memctl_common_params->ndimms_present) { - return; - } - -#if !defined(CONFIG_PHYS_64BIT) - if (base >= CONFIG_MAX_MEM_MAPPED) - return; - if ((base + size) >= CONFIG_MAX_MEM_MAPPED) - size = CONFIG_MAX_MEM_MAPPED - base; -#endif - if (set_ddr_laws(base, size, law_memctl) < 0) { - printf("%s: ERROR (ctrl #%d, TRGT ID=%x)\n", __func__, ctrl_num, - law_memctl); - return ; - } - debug("setup ddr law base = 0x%llx, size 0x%llx, TRGT_ID 0x%x\n", - base, size, law_memctl); -} - -__attribute__((weak, alias("__fsl_ddr_set_lawbar"))) void -fsl_ddr_set_lawbar(const common_timing_params_t *memctl_common_params, - unsigned int memctl_interleaved, - unsigned int ctrl_num); - -void fsl_ddr_set_intl3r(const unsigned int granule_size) -{ -#ifdef CONFIG_E6500 - u32 *mcintl3r = (void *) (CONFIG_SYS_IMMR + 0x18004); - *mcintl3r = 0x80000000 | (granule_size & 0x1f); - debug("Enable MCINTL3R with granule size 0x%x\n", granule_size); -#endif -} - -u32 fsl_ddr_get_intl3r(void) -{ - u32 val = 0; -#ifdef CONFIG_E6500 - u32 *mcintl3r = (void *) (CONFIG_SYS_IMMR + 0x18004); - val = *mcintl3r; -#endif - return val; -} - -void board_add_ram_info(int use_default) -{ - ccsr_ddr_t *ddr = (void *)(CONFIG_SYS_MPC8xxx_DDR_ADDR); - -#if defined(CONFIG_E6500) && (CONFIG_NUM_DDR_CONTROLLERS == 3) - u32 *mcintl3r = (void *) (CONFIG_SYS_IMMR + 0x18004); -#endif -#if (CONFIG_NUM_DDR_CONTROLLERS > 1) - uint32_t cs0_config = in_be32(&ddr->cs0_config); -#endif - uint32_t sdram_cfg = in_be32(&ddr->sdram_cfg); - int cas_lat; - -#if CONFIG_NUM_DDR_CONTROLLERS >= 2 - if (!(sdram_cfg & SDRAM_CFG_MEM_EN)) { - ddr = (void __iomem *)CONFIG_SYS_MPC8xxx_DDR2_ADDR; - sdram_cfg = in_be32(&ddr->sdram_cfg); - } -#endif -#if CONFIG_NUM_DDR_CONTROLLERS >= 3 - if (!(sdram_cfg & SDRAM_CFG_MEM_EN)) { - ddr = (void __iomem *)CONFIG_SYS_MPC8xxx_DDR3_ADDR; - sdram_cfg = in_be32(&ddr->sdram_cfg); - } -#endif - puts(" (DDR"); - switch ((sdram_cfg & SDRAM_CFG_SDRAM_TYPE_MASK) >> - SDRAM_CFG_SDRAM_TYPE_SHIFT) { - case SDRAM_TYPE_DDR1: - puts("1"); - break; - case SDRAM_TYPE_DDR2: - puts("2"); - break; - case SDRAM_TYPE_DDR3: - puts("3"); - break; - default: - puts("?"); - break; - } - - if (sdram_cfg & SDRAM_CFG_32_BE) - puts(", 32-bit"); - else if (sdram_cfg & SDRAM_CFG_16_BE) - puts(", 16-bit"); - else - puts(", 64-bit"); - - /* Calculate CAS latency based on timing cfg values */ - cas_lat = ((in_be32(&ddr->timing_cfg_1) >> 16) & 0xf) + 1; - if ((in_be32(&ddr->timing_cfg_3) >> 12) & 1) - cas_lat += (8 << 1); - printf(", CL=%d", cas_lat >> 1); - if (cas_lat & 0x1) - puts(".5"); - - if (sdram_cfg & SDRAM_CFG_ECC_EN) - puts(", ECC on)"); - else - puts(", ECC off)"); - -#if (CONFIG_NUM_DDR_CONTROLLERS == 3) -#ifdef CONFIG_E6500 - if (*mcintl3r & 0x80000000) { - puts("\n"); - puts(" DDR Controller Interleaving Mode: "); - switch (*mcintl3r & 0x1f) { - case FSL_DDR_3WAY_1KB_INTERLEAVING: - puts("3-way 1KB"); - break; - case FSL_DDR_3WAY_4KB_INTERLEAVING: - puts("3-way 4KB"); - break; - case FSL_DDR_3WAY_8KB_INTERLEAVING: - puts("3-way 8KB"); - break; - default: - puts("3-way UNKNOWN"); - break; - } - } -#endif -#endif -#if (CONFIG_NUM_DDR_CONTROLLERS >= 2) - if (cs0_config & 0x20000000) { - puts("\n"); - puts(" DDR Controller Interleaving Mode: "); - - switch ((cs0_config >> 24) & 0xf) { - case FSL_DDR_CACHE_LINE_INTERLEAVING: - puts("cache line"); - break; - case FSL_DDR_PAGE_INTERLEAVING: - puts("page"); - break; - case FSL_DDR_BANK_INTERLEAVING: - puts("bank"); - break; - case FSL_DDR_SUPERBANK_INTERLEAVING: - puts("super-bank"); - break; - default: - puts("invalid"); - break; - } - } -#endif - - if ((sdram_cfg >> 8) & 0x7f) { - puts("\n"); - puts(" DDR Chip-Select Interleaving Mode: "); - switch(sdram_cfg >> 8 & 0x7f) { - case FSL_DDR_CS0_CS1_CS2_CS3: - puts("CS0+CS1+CS2+CS3"); - break; - case FSL_DDR_CS0_CS1: - puts("CS0+CS1"); - break; - case FSL_DDR_CS2_CS3: - puts("CS2+CS3"); - break; - case FSL_DDR_CS0_CS1_AND_CS2_CS3: - puts("CS0+CS1 and CS2+CS3"); - break; - default: - puts("invalid"); - break; - } - } -} |