From 49f5befafd0f71e3ba033081e80fa4965d682ebc Mon Sep 17 00:00:00 2001 From: Xie Xiaobo Date: Mon, 24 Jun 2013 15:01:30 +0800 Subject: powerpc/85xx: Add TWR-P10xx board support TWR-P1025 Specification: ----------------------- Memory subsystem: 512MB DDR3 (on board DDR) 64Mbyte 16bit NOR flash One microSD Card slot Ethernet: eTSEC1: Connected to Atheros AR8035 GETH PHY eTSEC3: Connected to Atheros AR8035 GETH PHY UART: Two UARTs are routed to the FDTI dual USB to RS232 convertor USB: Two USB2.0 Type A ports I2C: AT24C01B 1K Board EEPROM (8 bit address) QUICC Engine: Connected to DP83849i PHY supply two 10/100M ethernet ports QE UART for RS485 or RS232 PCIE: One mini-PCIE slot Signed-off-by: Michael Johnston Signed-off-by: Xie Xiaobo [yorksun: Fixup include/configs/p1_twr.h] Signed-off-by: York Sun --- board/freescale/p1_twr/ddr.c | 71 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 board/freescale/p1_twr/ddr.c (limited to 'board/freescale/p1_twr/ddr.c') diff --git a/board/freescale/p1_twr/ddr.c b/board/freescale/p1_twr/ddr.c new file mode 100644 index 000000000..ff278ae9f --- /dev/null +++ b/board/freescale/p1_twr/ddr.c @@ -0,0 +1,71 @@ +/* + * Copyright 2013 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 +#include +#include +#include +#include +#include +#include +#include + +/* Fixed sdram init -- doesn't use serial presence detect. */ +phys_size_t fixed_sdram(void) +{ + sys_info_t sysinfo; + char buf[32]; + size_t ddr_size; + fsl_ddr_cfg_regs_t ddr_cfg_regs = { + .cs[0].bnds = CONFIG_SYS_DDR_CS0_BNDS, + .cs[0].config = CONFIG_SYS_DDR_CS0_CONFIG, + .cs[0].config_2 = CONFIG_SYS_DDR_CS0_CONFIG_2, +#if CONFIG_CHIP_SELECTS_PER_CTRL > 1 + .cs[1].bnds = CONFIG_SYS_DDR_CS1_BNDS, + .cs[1].config = CONFIG_SYS_DDR_CS1_CONFIG, + .cs[1].config_2 = CONFIG_SYS_DDR_CS1_CONFIG_2, +#endif + .timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3, + .timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0, + .timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1, + .timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2, + .ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL, + .ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2, + .ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1, + .ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2, + .ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL, + .ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL, + .ddr_data_init = CONFIG_SYS_DDR_DATA_INIT, + .ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL, + .ddr_init_addr = CONFIG_SYS_DDR_INIT_ADDR, + .ddr_init_ext_addr = CONFIG_SYS_DDR_INIT_EXT_ADDR, + .timing_cfg_4 = CONFIG_SYS_DDR_TIMING_4, + .timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5, + .ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL, + .ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL, + .ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR, + .ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1, + .ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2 + }; + + get_sys_info(&sysinfo); + printf("Configuring DDR for %s MT/s data rate\n", + strmhz(buf, sysinfo.freqDDRBus)); + + ddr_size = CONFIG_SYS_SDRAM_SIZE * 1024 * 1024; + + fsl_ddr_set_memctl_regs(&ddr_cfg_regs, 0); + + if (set_ddr_laws(CONFIG_SYS_DDR_SDRAM_BASE, + ddr_size, LAW_TRGT_IF_DDR_1) < 0) { + printf("ERROR setting Local Access Windows for DDR\n"); + return 0; + }; + + return ddr_size; +} -- cgit v1.2.3-70-g09d2