From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZAsPw-00066u-Cq for barebox@lists.infradead.org; Fri, 03 Jul 2015 04:17:37 +0000 Date: Fri, 3 Jul 2015 06:17:14 +0200 From: Sascha Hauer Message-ID: <20150703041714.GD18700@pengutronix.de> References: <1435827017-1999-1-git-send-email-alllecs@yandex.ru> <1435827017-1999-3-git-send-email-alllecs@yandex.ru> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1435827017-1999-3-git-send-email-alllecs@yandex.ru> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: [RFC V4 2/3] ddr_spd: add routune for printing SPD contents in human readable format To: Alexander Smirnov Cc: barebox@lists.infradead.org In the patch subject: s/routune/routine/ Sascha On Thu, Jul 02, 2015 at 11:50:16AM +0300, Alexander Smirnov wrote: > Signed-off-by: Alexander Smirnov > --- > 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"; > + > + 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) > + printf("%-50s %s\n", "Voltage Interface Level", > + sdram_voltage_interface_level[s->voltage]); > + else > + printf("Error Voltage Interface Level\n"); > + > + printf("%-50s ", "Module Configuration Type "); > + > + parity = s->config & 0x07; > + if (parity == 0) > + printf("No Parity\n"); > + > + if ((parity & 0x03) == 0x01) > + printf("Data Parity\n"); > + if (parity & 0x02) > + printf("Data ECC\n"); > + > + if (parity & 0x04) > + printf("Address/Command Parity\n"); > + > + if ((s->refresh >> 7) == 1) > + ref = "- Self Refresh"; > + else > + ref = " "; > + > + printf("%-50s Reduced (%s us) %s\n", "Refresh Rate", > + refresh[s->refresh & 0x7f], ref); > + printf("%-50s %d, %d\n", "Supported Burst Lengths", > + s->burstl & 4, s->burstl & 8); > + > + printf("%-50s %dT\n", "Supported CAS Latencies (tCL)", highestCAS); > + printf("%-50s %d-%d-%d-%d as DDR2-%d\n", "tCL-tRCD-tRP-tRAS", > + highestCAS, trcd, trp, tras, ddrclk); > + printf("%-50s %d.%d ns at CAS %d\n", "Minimum Cycle Time", x, y, > + highestCAS); > + printf("%-50s 0.%d%d ns at CAS %d\n", "Maximum Access Time", > + (s->clk_access >> 4), (s->clk_access & 0xf), highestCAS); > + printf("%-50s %d ns\n", "Maximum Cycle Time (tCK max)", > + (s->tckmax >> 4) + (s->tckmax & 0x0f)); > + > + printf("\n---=== Timing Parameters ===---\n"); > + printf("%-50s 0.%d ns\n", > + "Address/Command Setup Time Before Clock (tIS)", > + funct(s->ca_setup)); > + printf("%-50s 0.%d ns\n", "Address/Command Hold Time After Clock (tIH)", > + funct(s->ca_hold)); > + printf("%-50s 0.%d%d ns\n", "Data Input Setup Time Before Strobe (tDS)", > + s->data_setup >> 4, s->data_setup & 0xf); > + printf("%-50s 0.%d%d ns\n", "Data Input Hold Time After Strobe (tDH)", > + s->data_hold >> 4, s->data_hold & 0xf); > + > + printf("%-50s %d.%d ns\n", "Minimum Row Precharge Delay (tRP)", > + integ(s->trp), des(s->trp)); > + printf("%-50s %d.%d ns\n", > + "Minimum Row Active to Row Active Delay (tRRD)", > + integ(s->trrd), des(s->trrd)); > + printf("%-50s %d.%d ns\n", "Minimum RAS# to CAS# Delay (tRCD)", > + integ(s->trcd), des(s->trcd)); > + printf("%-50s %d ns\n", "Minimum RAS# Pulse Width (tRAS)", > + ((s->tras & 0xfc) + (s->tras & 0x3))); > + printf("%-50s %d.%d ns\n", "Write Recovery Time (tWR)", > + integ(s->twr), des(s->twr)); > + printf("%-50s %d.%d ns\n", "Minimum Write to Read CMD Delay (tWTR)", > + integ(s->twtr), des(s->twtr)); > + printf("%-50s %d.%d ns\n", > + "Minimum Read to Pre-charge CMD Delay (tRTP)", > + integ(s->trtp), des(s->trtp)); > + printf("%-50s %d ns\n", "Minimum Active to Auto-refresh Delay (tRC)", > + s->trc); > + printf("%-50s %d ns\n", "Minimum Recovery Delay (tRFC)", s->trfc); > + printf("%-50s 0.%d ns\n", "Maximum DQS to DQ Skew (tDQSQ)", s->tdqsq); > + printf("%-50s 0.%d ns\n", "Maximum Read Data Hold Skew (tQHS)", > + s->tqhs); > + > + printf("\n---=== Manufacturing Information ===---\n"); > + > + printf("%-50s", "Manufacturer JEDEC ID"); > + for (i = 64; i < 72; i++) > + printf(" %02x", record[i]); > + > + printf("\n"); > + if (s->mloc) > + printf("%-50s 0x%02x\n", "Manufacturing Location Code", > + s->mloc); > + > + printf("%-50s ", "Part Number"); > + for (i = 73; i < 91; i++) { > + if (record[i] >= 32 && record[i] < 127) > + printf("%c", record[i]); > + else > + printf("%d", record[i]); > + } > + printf("\n"); > + printf("%-50s 20%d-W%d\n", "Manufacturing Date", record[93], > + record[94]); > + printf("%-50s 0x", "Assembly Serial Number"); > + for (i = 95; i < 99; i++) > + printf("%02X", record[i]); > +} > diff --git a/include/ddr_spd.h b/include/ddr_spd.h > index fc03bac..01fe73c 100644 > --- a/include/ddr_spd.h > +++ b/include/ddr_spd.h > @@ -228,6 +228,7 @@ struct ddr3_spd_eeprom_s { > uint8_t cust[80]; /* 176-255 Open for Customer Use */ > }; > > +extern void ddr_spd_print(uint8_t *record); > extern uint32_t ddr3_spd_checksum_pass(const struct ddr3_spd_eeprom_s *spd); > extern uint32_t ddr2_spd_checksum_pass(const struct ddr2_spd_eeprom_s *spd); > > -- > 2.1.4 > > -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox