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authorWolfgang Denk <wd@denx.de>2011-10-04 22:08:13 +0200
committerWolfgang Denk <wd@denx.de>2011-10-04 22:08:13 +0200
commit1fed668b3fb9c35932f58af00ff5539239fa4e1d (patch)
treeeaaaead8ca19924af1823caae040f504be9b6d98 /board/freescale/mpc8349emds/ddr.c
parentc52575350fd6e794717f6bee4f81dbb8038fe22e (diff)
parent6d7b061af153bc5beb633c3bd15348284716a067 (diff)
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Merge branch 'master' of git://git.denx.de/u-boot-mpc85xx
* 'master' of git://git.denx.de/u-boot-mpc85xx: powerpc/p3060: Add SoC related support for P3060 platform powerpc/85xx: Add support for setting up RAID engine liodns on P5020 powerpc/85xx: Refactor some defines out of corenet_ds.h fm-eth: Add ability for board code to disable a port powerpc/mpc8548: Add workaround for erratum NMG_LBC103 powerpc/mpc8548: Add workaround for erratum NMG_DDR120 powerpc/mpc85xxcds: Fix PCI speed powerpc/mpc8548cds: Fix booting message powerpc/p4080: Add support for secure boot flow powerpc/85xx: Add Secure Boot support on P1010RDB for NOR, NAND & SPIFLASH powerpc/85xx: Add PBL & SECUREBOOT support on P3041/P5020DS boards powerpc/p2041rdb: remove watch dog related codes powerpc/p2041rdb: updated description of cpld command powerpc/p2041rdb: add more ddr frequencies support powerpc/p2041rdb: set sysclk according to status of physical switch SW1 powerpc/p2041rdb: update cpld reset command according to CPLD 2.0 powerpc/mpc8349emds: Migrate from spd_sdram to unified DDR driver powerpc/mpc83xx: Migrate from spd_sdram to unified DDR driver powerpc/mpc8xxx: Add DDR2 to unified DDR driver powerpc/mpc8xxx: Fix picos_to_mclk() and get_memory_clk_period_ps() powerpc/mpc8xxx: Add SPD EEPROM address for single controller 2 slots powerpc/mpc8xxx: Fix DDR code for empty first DIMM slot and enable DQS_en powerpc/85xx: Refactor P2041RDB to use common p_corenet files powerpc/85xx: refactor common P-Series CoreNet files for FSL boards powerpc/85xx: Enable CMD_REGINFO on corenet boards powerpc/85xx: p2041rdb - Remove unused 'execute' perm in TLB entries powerpc/85xx: Fix USB protocol definitions for P1020RDB powerpc/corenet_ds: Use separated speed tables for UDIMM and RDIMM powerpc/mpc8xxx: Move DDR RCW overriding to common code powerpc/mpc8xxx: Extend CWL table powerpc/85xx: Cleanup how SVR_MAJ() is defined on MPC8536 powerpc/85xx: Cleanup extern in corenet_ds board code powerpc/p2041rdb: Add ethernet support on P2041RDB board powerpc/85xx: Add networking support to P1023RDS powerpc/hydra: Add ethernet support on P5020/P3041 DS boards powerpc/85xx: Add FMan ethernet support to P4080DS powerpc/85xx: Add support for FMan ethernet in Independent mode powerpc/mpc8548cds: Cleanup mpc8548cds.c powerpc/mp: add support for discontiguous cores powerpc/85xx: corenet_ds - Remove unused 'execute' perm in TLB entries fdt: Add new fdt_create_phandle helper fdt: Rename fdt_create_phandle to fdt_set_phandle powerpc/85xx: Fix compile warnings/errors if CONFIG_SYS_DPAA_FMAN isn't set fsl_ifc: Add the workaround for erratum IFC A-003399(enabled on P1010) powerpc/P1010: Add workaround for erratum P1010-A003549 (related to IFC) fsl_ifc: Add the workaround for erratum IFC-A002769 (enable on P1010) powerpc/85xx: Expanding the window of CCSRBAR in AS=1 from 4k to 1M powerpc/85xx: Add NAND/NAND_SPL support to P1010RDB nand: Freescale Integrated Flash Controller NAND support powerpc/85xx: Add basic support for P1010RDB powerpc/85xx: Add support for new P102x/P2020 RDB style boards powerpc/85xx: relocate CCSR before creating the initial RAM area powerpc/85xx: introduce and document CONFIG_SYS_CCSRBAR macros powerpc/85xx: Enable internal USB UTMI PHY on p204x/p3041/p50x0 powerpc/85xx: Add ULPI and UTMI USB Phy support for P1010/P1014
Diffstat (limited to 'board/freescale/mpc8349emds/ddr.c')
-rw-r--r--board/freescale/mpc8349emds/ddr.c107
1 files changed, 107 insertions, 0 deletions
diff --git a/board/freescale/mpc8349emds/ddr.c b/board/freescale/mpc8349emds/ddr.c
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+/*
+ * Copyright 2011 Freescale Semiconductor, Inc.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+#include <asm/fsl_ddr_sdram.h>
+#include <asm/fsl_ddr_dimm_params.h>
+
+struct board_specific_parameters {
+ u32 datarate_mhz_low;
+ u32 datarate_mhz_high;
+ u32 n_ranks;
+ u32 clk_adjust;
+ u32 cpo;
+ u32 write_data_delay;
+ u32 force_2T;
+};
+
+const struct board_specific_parameters board_specific_parameters_udimm[][20] = {
+ {
+ /*
+ * memory controller 0
+ * lo| hi| num| clk| cpo|wrdata|2T
+ * mhz| mhz|ranks|adjst| | delay|
+ */
+ { 0, 300, 2, 4, 4, 2, 0},
+ {301, 365, 2, 4, 6, 2, 0},
+ {366, 450, 2, 4, 7, 2, 0},
+ {451, 850, 2, 4, 31, 2, 0},
+ { 0, 300, 1, 4, 4, 2, 0},
+ {301, 365, 1, 4, 6, 2, 0},
+ {366, 450, 1, 4, 7, 2, 0},
+ {451, 850, 1, 4, 31, 2, 0}
+ }
+};
+
+void fsl_ddr_board_options(memctl_options_t *popts,
+ dimm_params_t *pdimm,
+ unsigned int ctrl_num)
+{
+ const struct board_specific_parameters *pbsp;
+ u32 num_params;
+ u32 i, dimm_num;
+ ulong ddr_freq;
+
+ if (ctrl_num != 0) /* we have only one controller */
+ return;
+ for (i = 0; i < CONFIG_DIMM_SLOTS_PER_CTLR; i++) {
+ if (pdimm[i].n_ranks)
+ break;
+ }
+ if (i >= CONFIG_DIMM_SLOTS_PER_CTLR) /* no DIMM */
+ return;
+
+ dimm_num = i;
+ pbsp = &(board_specific_parameters_udimm[ctrl_num][0]);
+ num_params = sizeof(board_specific_parameters_udimm[ctrl_num]) /
+ sizeof(board_specific_parameters_udimm[0][0]);
+
+ /* Get clk_adjust, cpo, write_data_delay,2T, according to the board ddr
+ * freqency and n_banks specified in board_specific_parameters table.
+ */
+ ddr_freq = get_ddr_freq(0) / 1000000;
+ for (i = 0; i < num_params; i++) {
+ if (ddr_freq >= pbsp->datarate_mhz_low &&
+ ddr_freq <= pbsp->datarate_mhz_high &&
+ pdimm[dimm_num].n_ranks == pbsp->n_ranks) {
+ popts->clk_adjust = pbsp->clk_adjust;
+ popts->cpo_override = pbsp->cpo;
+ popts->write_data_delay = pbsp->write_data_delay;
+ popts->twoT_en = pbsp->force_2T;
+ break;
+ }
+ pbsp++;
+ }
+
+ if (i == num_params) {
+ printf("Warning: board specific timing not found "
+ "for data rate %lu MT/s!\n", ddr_freq);
+ }
+
+ /*
+ * Factors to consider for half-strength driver enable:
+ * - number of DIMMs installed
+ */
+ popts->half_strength_driver_enable = 0;
+ popts->DQS_config = 0; /* only true DQS signal is used on board */
+}