From 7916f4cef62bf032af86368a9df45db833d09b79 Mon Sep 17 00:00:00 2001 From: Kyösti Mälkki Date: Thu, 9 Feb 2012 16:07:41 +0200 Subject: AMD Geode cpus: apply un-written naming rules MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Kconfig directives to select chip drivers for compile literally match the chip directory names capitalized and underscored. Rename directories and Kconfig as follows: model_lx -> geode_lx model_gx1 -> geode_gx1 model_gx2 -> geode_gx2 Change-Id: Ib8bf1e758b88f9efed1cf8b11c76b796388e7147 Signed-off-by: Kyösti Mälkki Reviewed-on: http://review.coreboot.org/613 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer --- src/cpu/amd/geode_lx/cpureginit.c | 267 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 267 insertions(+) create mode 100644 src/cpu/amd/geode_lx/cpureginit.c (limited to 'src/cpu/amd/geode_lx/cpureginit.c') diff --git a/src/cpu/amd/geode_lx/cpureginit.c b/src/cpu/amd/geode_lx/cpureginit.c new file mode 100644 index 0000000000..bad98b51bf --- /dev/null +++ b/src/cpu/amd/geode_lx/cpureginit.c @@ -0,0 +1,267 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2006 Indrek Kruusa + * Copyright (C) 2006 Ronald G. Minnich + * Copyright (C) 2007 Advanced Micro Devices, Inc. + * + * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/************************************************************************** +;* +;* SetDelayControl +;* +;*************************************************************************/ +#include "cpu/x86/msr.h" + + + + +/** + * Delay Control Settings table from AMD (MCP 0x4C00000F). + */ +static const msrinit_t delay_msr_table[] = { + {CPU_BC_MSS_ARRAY_CTL0, {.hi = 0x00000000, .lo = 0x2814D352}}, + {CPU_BC_MSS_ARRAY_CTL1, {.hi = 0x00000000, .lo = 0x1068334D}}, + {CPU_BC_MSS_ARRAY_CTL2, {.hi = 0x00000106, .lo = 0x83104104}}, +}; + + + +static const struct delay_controls { + u8 dimms; + u8 devices; + u32 slow_hi; + u32 slow_low; + u32 fast_hi; + u32 fast_low; +} delay_control_table[] = { + /* DIMMs Devs Slow (<=333MHz) Fast (>334MHz) */ + { 1, 4, 0x0837100FF, 0x056960004, 0x0827100FF, 0x056960004 }, + { 1, 8, 0x0837100AA, 0x056960004, 0x0827100AA, 0x056960004 }, + { 1, 16, 0x0837100AA, 0x056960004, 0x082710055, 0x056960004 }, + { 2, 8, 0x0837100A5, 0x056960004, 0x082710000, 0x056960004 }, + { 2, 16, 0x0937100A5, 0x056960004, 0x0C27100A5, 0x056960004 }, + { 2, 20, 0x0B37100A5, 0x056960004, 0x0B27100A5, 0x056960004 }, + { 2, 24, 0x0B37100A5, 0x056960004, 0x0B27100A5, 0x056960004 }, + { 2, 32, 0x0B37100A5, 0x056960004, 0x0B2710000, 0x056960004 }, +}; + +/* + * Bit 55 (disable SDCLK 1,3,5) should be set if there is a single DIMM + * in slot 0, but it should be clear for all 2 DIMM settings and if a + * single DIMM is in slot 1. Bits 54:52 should always be set to '111'. + * + * Settings for single DIMM and no VTT termination (like DB800 platform) + * 0xF2F100FF 0x56960004 + * ------------------------------------- + * ADDR/CTL have 22 ohm series R + * DQ/DQM/DQS have 33 ohm series R + */ + +/** + * This is Black Magic DRAM timing juju[1]. + * + * DRAM delay depends on CPU clock, memory bus clock, memory bus loading, + * memory bus termination, your middle initial (ha! caught you!), GeodeLink + * clock rate, and DRAM timing specifications. + * + * From this the code computes a number which is "known to work". No, + * hardware is not an exact science. And, finally, if an FS2 (JTAG debugger) + * is hooked up, then just don't do anything. This code was written by a master + * of the Dark Arts at AMD and should not be modified in any way. + * + * [1] (http://www.thefreedictionary.com/juju) + * + * @param dimm0 The SMBus address of DIMM 0 (mainboard dependent). + * @param dimm1 The SMBus address of DIMM 1 (mainboard dependent). + * @param terminated The bus is terminated. (mainboard dependent). + */ +static void SetDelayControl(u8 dimm0, u8 dimm1, int terminated) +{ + u32 glspeed; + u8 spdbyte0, spdbyte1, dimms, i; + msr_t msr; + + glspeed = GeodeLinkSpeed(); + + /* Fix delay controls for DM and IM arrays. */ + for (i = 0; i < ARRAY_SIZE(delay_msr_table); i++) + wrmsr(delay_msr_table[i].index, delay_msr_table[i].msr); + + msr = rdmsr(GLCP_FIFOCTL); + msr.hi = 0x00000005; + wrmsr(GLCP_FIFOCTL, msr); + + /* Enable setting. */ + msr.hi = 0; + msr.lo = 0x00000001; + wrmsr(CPU_BC_MSS_ARRAY_CTL_ENA, msr); + + /* Debug Delay Control setup check. + * Leave it alone if it has been setup. FS2 or something is here. + */ + msr = rdmsr(GLCP_DELAY_CONTROLS); + if (msr.lo & ~(DELAY_LOWER_STATUS_MASK)) + return; + + /* Delay Controls based on DIMM loading. UGH! + * Number of devices = module width (SPD 6) / device width (SPD 13) + * * physical banks (SPD 5) + * + * Note: We only support a module width of 64. + */ + dimms = 0; + spdbyte0 = spd_read_byte(dimm0, SPD_PRIMARY_SDRAM_WIDTH); + if (spdbyte0 != 0xFF) { + dimms++; + spdbyte0 = (u8)64 / spdbyte0 * + (u8)(spd_read_byte(dimm0, SPD_NUM_DIMM_BANKS)); + } else { + spdbyte0 = 0; + } + + spdbyte1 = spd_read_byte(dimm1, SPD_PRIMARY_SDRAM_WIDTH); + if (spdbyte1 != 0xFF) { + dimms++; + spdbyte1 = (u8)64 / spdbyte1 * + (u8)(spd_read_byte(dimm1, SPD_NUM_DIMM_BANKS)); + } else { + spdbyte1 = 0; + } + + /* Zero GLCP_DELAY_CONTROLS MSR */ + msr.hi = msr.lo = 0; + + /* Save some power, disable clock to second DIMM if it is empty. */ + if (spdbyte1 == 0) + msr.hi |= DELAY_UPPER_DISABLE_CLK135; + + spdbyte0 += spdbyte1; + + if ((dimms == 1) && (terminated == DRAM_TERMINATED)) { + msr.hi = 0xF2F100FF; + msr.lo = 0x56960004; + } else for (i = 0; i < ARRAY_SIZE(delay_control_table); i++) { + if ((dimms == delay_control_table[i].dimms) && + (spdbyte0 <= delay_control_table[i].devices)) { + if (glspeed < 334) { + msr.hi |= delay_control_table[i].slow_hi; + msr.lo |= delay_control_table[i].slow_low; + } else { + msr.hi |= delay_control_table[i].fast_hi; + msr.lo |= delay_control_table[i].fast_low; + } + break; + } + } + wrmsr(GLCP_DELAY_CONTROLS, msr); +} + +/* ***************************************************************************/ +/* * cpuRegInit*/ +/* ***************************************************************************/ +void cpuRegInit(int debug_clock_disable, u8 dimm0, u8 dimm1, int terminated) +{ + int msrnum; + msr_t msr; + + /* Castle 2.0 BTM periodic sync period. */ + /* [40:37] 1 sync record per 256 bytes */ + print_debug("Castle 2.0 BTM periodic sync period.\n"); + msrnum = CPU_PF_CONF; + msr = rdmsr(msrnum); + msr.hi |= (0x8 << 5); + wrmsr(msrnum, msr); + + /* + * LX performance setting. + * Enable Quack for fewer re-RAS on the MC + */ + print_debug("Enable Quack for fewer re-RAS on the MC\n"); + msrnum = GLIU0_ARB; + msr = rdmsr(msrnum); + msr.hi &= ~ARB_UPPER_DACK_EN_SET; + msr.hi |= ARB_UPPER_QUACK_EN_SET; + wrmsr(msrnum, msr); + + msrnum = GLIU1_ARB; + msr = rdmsr(msrnum); + msr.hi &= ~ARB_UPPER_DACK_EN_SET; + msr.hi |= ARB_UPPER_QUACK_EN_SET; + wrmsr(msrnum, msr); + + /* GLIU port active enable, limit south pole masters + * (AES and PCI) to one outstanding transaction. + */ + print_debug(" GLIU port active enable\n"); + msrnum = GLIU1_PORT_ACTIVE; + msr = rdmsr(msrnum); + msr.lo &= ~0x880; + wrmsr(msrnum, msr); + + /* Set the Delay Control in GLCP */ + print_debug("Set the Delay Control in GLCP\n"); + SetDelayControl(dimm0, dimm1, terminated); + + /* Enable RSDC */ + print_debug("Enable RSDC\n"); + msrnum = CPU_AC_SMM_CTL; + msr = rdmsr(msrnum); + msr.lo |= SMM_INST_EN_SET; + wrmsr(msrnum, msr); + + /* FPU imprecise exceptions bit */ + print_debug("FPU imprecise exceptions bit\n"); + msrnum = CPU_FPU_MSR_MODE; + msr = rdmsr(msrnum); + msr.lo |= FPU_IE_SET; + wrmsr(msrnum, msr); + + /* Power Savers (Do after BIST) */ + /* Enable Suspend on HLT & PAUSE instructions */ + print_debug("Enable Suspend on HLT & PAUSE instructions\n"); + msrnum = CPU_XC_CONFIG; + msr = rdmsr(msrnum); + msr.lo |= XC_CONFIG_SUSP_ON_HLT | XC_CONFIG_SUSP_ON_PAUSE; + wrmsr(msrnum, msr); + + /* Enable SUSP and allow TSC to run in Suspend (keep speed detection happy) */ + print_debug("Enable SUSP and allow TSC to run in Suspend\n"); + msrnum = CPU_BC_CONF_0; + msr = rdmsr(msrnum); + msr.lo |= TSC_SUSP_SET | SUSP_EN_SET; + msr.lo &= 0x0F0FFFFFF; + msr.lo |= 0x002000000; /* PBZ213: Set PAUSEDLY = 2 */ + wrmsr(msrnum, msr); + + /* Disable the debug clock to save power. */ + /* NOTE: leave it enabled for fs2 debug */ + if (debug_clock_disable && 0) { + msrnum = GLCP_DBGCLKCTL; + msr.hi = 0; + msr.lo = 0; + wrmsr(msrnum, msr); + } + + /* Setup throttling delays to proper mode if it is ever enabled. */ + print_debug("Setup throttling delays to proper mode\n"); + msrnum = GLCP_TH_OD; + msr.hi = 0; + msr.lo = 0x00000603C; + wrmsr(msrnum, msr); + print_debug("Done cpuRegInit\n"); +} -- cgit v1.2.3