On Thu, 2 Jul 2015 11:50:16 +0300 Alexander Smirnov <alllecs@xxxxxxxxx> wrote: > Signed-off-by: Alexander Smirnov <alllecs@xxxxxxxxx> > --- > common/ddr_spd.c | 290 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ > include/ddr_spd.h | 1 + > 2 files changed, 291 insertions(+) > > diff --git a/common/ddr_spd.c b/common/ddr_spd.c > index ea0b529..6757d58 100644 > --- a/common/ddr_spd.c > +++ b/common/ddr_spd.c > @@ -61,3 +61,293 @@ uint32_t ddr3_spd_checksum_pass(const struct ddr3_spd_eeprom_s *spd) > > return 0; > } > + > +static char *heights[] = { > + "<25.4", > + "25.4", > + "25.4 - 30.0", > + "30.0", > + "30.5", > + "> 30.5", > +}; > + > +static char *sdram_voltage_interface_level[] = { > + "TTL (5V tolerant)", > + "LVTTL (not 5V tolerant)", > + "HSTL 1.5V", > + "SSTL 3.3V", > + "SSTL 2.5V", > + "SSTL 1.8V", > +}; > + > +static char *ddr2_module_types[] = { > + "RDIMM (133.35 mm)", > + "UDIMM (133.25 mm)", > + "SO-DIMM (67.6 mm)", > + "Micro-DIMM (45.5 mm)", > + "Mini-RDIMM (82.0 mm)", > + "Mini-UDIMM (82.0 mm)", > +}; > + > +static char *refresh[] = { > + "15.625", > + "3.9", > + "7.8", > + "31.3", > + "62.5", > + "125", > +}; > + > +static char *type_list[] = { > + "Reserved", > + "FPM DRAM", > + "EDO", > + "Pipelined Nibble", > + "SDR SDRAM", > + "Multiplexed ROM", > + "DDR SGRAM", > + "DDR SDRAM", > + [SPD_MEMTYPE_DDR2] = "DDR2 SDRAM", > + "FB-DIMM", > + "FB-DIMM Probe", > + [SPD_MEMTYPE_DDR3] = "DDR3 SDRAM", > +}; > + > +static int funct(uint8_t addr) > +{ > + int t; > + > + t = ((addr >> 4) * 10 + (addr & 0xf)); > + > + return t; > +} > + > +static int des(uint8_t byte) > +{ > + int k; > + > + k = (byte & 0x3) * 10 / 4; > + > + return k; > +} > + > +static int integ(uint8_t byte) > +{ > + int k; > + > + k = (byte >> 2); > + > + return k; > +} > + > +static int ddr2_sdram_ctime(uint8_t byte) > +{ > + int ctime; > + > + ctime = (byte >> 4) * 100; > + if ((byte & 0xf) <= 9) > + ctime += (byte & 0xf) * 10; > + else if ((byte & 0xf) == 10) > + ctime += 25; > + else if ((byte & 0xf) == 11) > + ctime += 33; > + else if ((byte & 0xf) == 12) > + ctime += 66; > + else if ((byte & 0xf) == 13) > + ctime += 75; > + > + return ctime; > +} > + > +void ddr_spd_print(uint8_t *record) > +{ > + int highestCAS = 0; > + int cas[256]; > + int i, i_i, k, x, y; > + int ddrclk, tbits, pcclk; > + int trcd, trp, tras; > + int ctime; > + uint8_t parity; > + char *ref, *sum; > + struct ddr2_spd_eeprom_s *s = (struct ddr2_spd_eeprom_s *)record; > + > + ctime = ddr2_sdram_ctime(s->clk_cycle); > + ddrclk = 2 * (1000 / ctime) * 100; > + tbits = (s->res_7 << 8) + (s->dataw); > + if ((s->config & 0x03) == 1) > + tbits = tbits - 8; > + > + pcclk = ddrclk * tbits / 8; > + pcclk = pcclk - (pcclk % 100); > + i_i = (s->nrow_addr & 0x0f) + (s->ncol_addr & 0x0f) - 17; > + k = ((s->mod_ranks & 0x7) + 1) * s->nbanks; > + trcd = ((s->trcd >> 2) + ((s->trcd & 3) * 0.25)) / ctime * 100; > + trp = ((s->trp >> 2) + ((s->trp & 3) * 0.25)) / ctime * 100; > + tras = s->tras * 100 / ctime ; > + x = (int)(ctime / 100); > + y = (ctime - (int)((ctime / 100) * 100)) / 10; > + > + for (i_i = 2; i_i < 7; i_i++) { > + if (s->cas_lat & 1 << i_i) { > + highestCAS = i_i; > + cas[highestCAS]++; > + } > + } > + > + if (ddr2_spd_checksum_pass(s)) > + sum = "ERR"; > + else > + sum = "OK"; > + Please check mem_type here too. You use ddr2_spd_checksum_pass() for any type memory. > + printf("---=== SPD EEPROM Information ===---\n"); > + printf("%-50s %s (0x%0X)\n", "EEPROM Checksum of bytes 0-62", > + sum, s->cksum); > + printf("%-50s %d\n", "# of bytes written to SDRAM EEPROM", > + s->info_size); > + printf("%-50s %d\n", "Total number of bytes in EEPROM", > + 1 << (s->chip_size)); > + > + if (s->mem_type < ARRAY_SIZE(type_list)) > + printf("%-50s %s\n", "Fundamental Memory type", > + type_list[s->mem_type]); > + else > + printf("%-50s (%02x)\n", "Warning: unknown memory type", > + s->mem_type); > + > + printf("%-50s %x.%x\n", "SPD Revision", s->spd_rev >> 4, > + s->spd_rev & 0x0f); > + if (s->mem_type != SPD_MEMTYPE_DDR2) { > + printf("Can't dump extended information for non-DDR2 memory\n"); > + return; > + } > + > + printf("\n---=== Memory Characteristics ===---\n"); > + printf("%-50s %d MHz (PC2-%d)\n", "Maximum module speed", > + ddrclk, pcclk); > + if (i_i > 0 && i_i <= 12 && k > 0) > + printf("%-50s %d MB\n", "Size", (1 << i_i) * k); > + else > + printf("%-50s INVALID: %02x %02x %02x %02x\n", "Size", > + s->nrow_addr, s->ncol_addr, s->mod_ranks, s->nbanks); > + > + printf("%-50s %d x %d x %d x %d\n", "Banks x Rows x Columns x Bits", > + s->nbanks, s->nrow_addr, s->ncol_addr, s->dataw); > + printf("%-50s %d\n", "Ranks", (s->mod_ranks & 0x7) + 1); > + printf("%-50s %d bits\n", "SDRAM Device Width", s->primw); > + > + if (s->mod_ranks >> 5 < ARRAY_SIZE(heights)) > + printf("%-50s %s mm\n", "Module Height", > + heights[s->mod_ranks >> 5]); > + else > + printf("Error height\n"); > + > + if ((fls(s->dimm_type) - 1) < ARRAY_SIZE(ddr2_module_types)) > + printf("%-50s %s\n", "Module Type", > + ddr2_module_types[fls(s->dimm_type) - 1]); > + else > + printf("Error module type\n"); > + > + printf("%-50s ", "DRAM Package "); > + if ((s->mod_ranks & 0x10) == 1) > + printf("Stack\n"); > + else > + printf("Planar\n"); > + if (s->voltage < 7) use ARRAY_SIZE here -- Best regards, Antony Pavlov _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox