--- /dev/null
+/*
+ * Copyright 2008-2014 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>
+#ifdef CONFIG_PPC
+#include <asm/fsl_law.h>
+#endif
+#include <div64.h>
+
+#include <fsl_ddr.h>
+#include <fsl_immap.h>
+#include <asm/io.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
+
+u32 fsl_ddr_get_version(void)
+{
+ struct ccsr_ddr __iomem *ddr;
+ u32 ver_major_minor_errata;
+
+ ddr = (void *)_DDR_ADDR;
+ ver_major_minor_errata = (ddr_in32(&ddr->ip_rev1) & 0xFFFF) << 8;
+ ver_major_minor_errata |= (ddr_in32(&ddr->ip_rev2) & 0xFF00) >> 8;
+
+ return ver_major_minor_errata;
+}
+
+/*
+ * 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;
+}
+
+#ifdef CONFIG_PPC
+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);
+#endif
+
+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)
+{
+ struct ccsr_ddr __iomem *ddr =
+ (struct ccsr_ddr __iomem *)(CONFIG_SYS_FSL_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 = ddr_in32(&ddr->cs0_config);
+#endif
+ uint32_t sdram_cfg = ddr_in32(&ddr->sdram_cfg);
+ int cas_lat;
+
+#if CONFIG_NUM_DDR_CONTROLLERS >= 2
+ if (!(sdram_cfg & SDRAM_CFG_MEM_EN)) {
+ ddr = (void __iomem *)CONFIG_SYS_FSL_DDR2_ADDR;
+ sdram_cfg = ddr_in32(&ddr->sdram_cfg);
+ }
+#endif
+#if CONFIG_NUM_DDR_CONTROLLERS >= 3
+ if (!(sdram_cfg & SDRAM_CFG_MEM_EN)) {
+ ddr = (void __iomem *)CONFIG_SYS_FSL_DDR3_ADDR;
+ sdram_cfg = ddr_in32(&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;
+ case SDRAM_TYPE_DDR4:
+ puts("4");
+ 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 = ((ddr_in32(&ddr->timing_cfg_1) >> 16) & 0xf);
+ if (fsl_ddr_get_version() <= 0x40400)
+ cas_lat += 1;
+ else
+ cas_lat += 2;
+ cas_lat += ((ddr_in32(&ddr->timing_cfg_3) >> 12) & 3) << 4;
+ 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_256B_INTERLEAVING:
+ puts("256B");
+ break;
+ 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;
+ }
+ }
+}
Code Review / kvmfornfv.git / blobdiff