diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/Kconfig | 20 | ||||
| -rw-r--r-- | arch/x86/cpu/ivybridge/Kconfig | 1 | ||||
| -rw-r--r-- | arch/x86/cpu/ivybridge/Makefile | 3 | ||||
| -rw-r--r-- | arch/x86/cpu/ivybridge/early_me.c | 191 | ||||
| -rw-r--r-- | arch/x86/cpu/ivybridge/me_status.c | 195 | ||||
| -rw-r--r-- | arch/x86/cpu/ivybridge/report_platform.c | 89 | ||||
| -rw-r--r-- | arch/x86/cpu/ivybridge/sdram.c | 553 | ||||
| -rw-r--r-- | arch/x86/cpu/start.S | 10 | ||||
| -rw-r--r-- | arch/x86/dts/link.dts | 111 | ||||
| -rw-r--r-- | arch/x86/include/asm/arch-ivybridge/me.h | 356 | ||||
| -rw-r--r-- | arch/x86/include/asm/arch-ivybridge/pch.h | 113 | ||||
| -rw-r--r-- | arch/x86/include/asm/arch-ivybridge/pei_data.h | 121 | ||||
| -rw-r--r-- | arch/x86/include/asm/arch-ivybridge/sandybridge.h | 2 | ||||
| -rw-r--r-- | arch/x86/include/asm/config.h | 1 | ||||
| -rw-r--r-- | arch/x86/include/asm/global_data.h | 13 | ||||
| -rw-r--r-- | arch/x86/include/asm/post.h | 5 | ||||
| -rw-r--r-- | arch/x86/include/asm/u-boot-x86.h | 2 | ||||
| -rw-r--r-- | arch/x86/lib/Makefile | 1 | ||||
| -rw-r--r-- | arch/x86/lib/ramtest.c | 79 |
19 files changed, 1861 insertions, 5 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index f27d731..43c22ff 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -50,6 +50,17 @@ config CPU_ADDR_BITS int default 36 +config HPET_ADDRESS + hex + default 0xfed00000 if !HPET_ADDRESS_OVERRIDE + +config SMM_TSEG + bool + default n + +config SMM_TSEG_SIZE + hex + config ROM_SIZE hex default 0x800000 @@ -63,6 +74,15 @@ config HAVE_INTEL_ME SPI flash format. You will need to supply the me.bin file in your board directory. +config X86_RAMTEST + bool "Perform a simple RAM test after SDRAM initialisation" + help + If there is something wrong with SDRAM then the platform will + often crash within U-Boot or the kernel. This option enables a + very simple RAM test that quickly checks whether the SDRAM seems + to work correctly. It is not exhaustive but can save time by + detecting obvious failures. + source "arch/x86/cpu/ivybridge/Kconfig" source "board/chromebook-x86/coreboot/Kconfig" diff --git a/arch/x86/cpu/ivybridge/Kconfig b/arch/x86/cpu/ivybridge/Kconfig index 177247e..afca957 100644 --- a/arch/x86/cpu/ivybridge/Kconfig +++ b/arch/x86/cpu/ivybridge/Kconfig @@ -129,6 +129,7 @@ config CPU_SPECIFIC_OPTIONS select CPU_MICROCODE_IN_CBFS select TSC_SYNC_MFENCE select HAVE_INTEL_ME + select X86_RAMTEST config SMM_TSEG_SIZE hex diff --git a/arch/x86/cpu/ivybridge/Makefile b/arch/x86/cpu/ivybridge/Makefile index e5c0751..721b37e 100644 --- a/arch/x86/cpu/ivybridge/Makefile +++ b/arch/x86/cpu/ivybridge/Makefile @@ -7,7 +7,10 @@ obj-y += car.o obj-y += cpu.o obj-y += early_init.o +obj-y += early_me.o obj-y += lpc.o +obj-y += me_status.o obj-y += microcode_intel.o obj-y += pci.o +obj-y += report_platform.o obj-y += sdram.o diff --git a/arch/x86/cpu/ivybridge/early_me.c b/arch/x86/cpu/ivybridge/early_me.c new file mode 100644 index 0000000..b24dea1 --- /dev/null +++ b/arch/x86/cpu/ivybridge/early_me.c @@ -0,0 +1,191 @@ +/* + * From Coreboot src/southbridge/intel/bd82x6x/early_me.c + * + * Copyright (C) 2011 The Chromium OS Authors. All rights reserved. + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include <common.h> +#include <errno.h> +#include <asm/pci.h> +#include <asm/processor.h> +#include <asm/arch/me.h> +#include <asm/arch/pch.h> +#include <asm/io.h> + +static const char *const me_ack_values[] = { + [ME_HFS_ACK_NO_DID] = "No DID Ack received", + [ME_HFS_ACK_RESET] = "Non-power cycle reset", + [ME_HFS_ACK_PWR_CYCLE] = "Power cycle reset", + [ME_HFS_ACK_S3] = "Go to S3", + [ME_HFS_ACK_S4] = "Go to S4", + [ME_HFS_ACK_S5] = "Go to S5", + [ME_HFS_ACK_GBL_RESET] = "Global Reset", + [ME_HFS_ACK_CONTINUE] = "Continue to boot" +}; + +static inline void pci_read_dword_ptr(void *ptr, int offset) +{ + u32 dword; + + dword = pci_read_config32(PCH_ME_DEV, offset); + memcpy(ptr, &dword, sizeof(dword)); +} + +static inline void pci_write_dword_ptr(void *ptr, int offset) +{ + u32 dword = 0; + memcpy(&dword, ptr, sizeof(dword)); + pci_write_config32(PCH_ME_DEV, offset, dword); +} + +void intel_early_me_status(void) +{ + struct me_hfs hfs; + struct me_gmes gmes; + + pci_read_dword_ptr(&hfs, PCI_ME_HFS); + pci_read_dword_ptr(&gmes, PCI_ME_GMES); + + intel_me_status(&hfs, &gmes); +} + +int intel_early_me_init(void) +{ + int count; + struct me_uma uma; + struct me_hfs hfs; + + debug("Intel ME early init\n"); + + /* Wait for ME UMA SIZE VALID bit to be set */ + for (count = ME_RETRY; count > 0; --count) { + pci_read_dword_ptr(&uma, PCI_ME_UMA); + if (uma.valid) + break; + udelay(ME_DELAY); + } + if (!count) { + printf("ERROR: ME is not ready!\n"); + return -EBUSY; + } + + /* Check for valid firmware */ + pci_read_dword_ptr(&hfs, PCI_ME_HFS); + if (hfs.fpt_bad) { + printf("WARNING: ME has bad firmware\n"); + return -EBADF; + } + + debug("Intel ME firmware is ready\n"); + + return 0; +} + +int intel_early_me_uma_size(void) +{ + struct me_uma uma; + + pci_read_dword_ptr(&uma, PCI_ME_UMA); + if (uma.valid) { + debug("ME: Requested %uMB UMA\n", uma.size); + return uma.size; + } + + debug("ME: Invalid UMA size\n"); + return -EINVAL; +} + +static inline void set_global_reset(int enable) +{ + u32 etr3; + + etr3 = pci_read_config32(PCH_LPC_DEV, ETR3); + + /* Clear CF9 Without Resume Well Reset Enable */ + etr3 &= ~ETR3_CWORWRE; + + /* CF9GR indicates a Global Reset */ + if (enable) + etr3 |= ETR3_CF9GR; + else + etr3 &= ~ETR3_CF9GR; + + pci_write_config32(PCH_LPC_DEV, ETR3, etr3); +} + +int intel_early_me_init_done(u8 status) +{ + u8 reset; + int count; + u32 mebase_l, mebase_h; + struct me_hfs hfs; + struct me_did did = { + .init_done = ME_INIT_DONE, + .status = status + }; + + /* MEBASE from MESEG_BASE[35:20] */ + mebase_l = pci_read_config32(PCH_DEV, PCI_CPU_MEBASE_L); + mebase_h = pci_read_config32(PCH_DEV, PCI_CPU_MEBASE_H); + mebase_h &= 0xf; + did.uma_base = (mebase_l >> 20) | (mebase_h << 12); + + /* Send message to ME */ + debug("ME: Sending Init Done with status: %d, UMA base: 0x%04x\n", + status, did.uma_base); + + pci_write_dword_ptr(&did, PCI_ME_H_GS); + + /* Must wait for ME acknowledgement */ + for (count = ME_RETRY; count > 0; --count) { + pci_read_dword_ptr(&hfs, PCI_ME_HFS); + if (hfs.bios_msg_ack) + break; + udelay(ME_DELAY); + } + if (!count) { + printf("ERROR: ME failed to respond\n"); + return -1; + } + + /* Return the requested BIOS action */ + debug("ME: Requested BIOS Action: %s\n", me_ack_values[hfs.ack_data]); + + /* Check status after acknowledgement */ + intel_early_me_status(); + + reset = 0; + switch (hfs.ack_data) { + case ME_HFS_ACK_CONTINUE: + /* Continue to boot */ + return 0; + case ME_HFS_ACK_RESET: + /* Non-power cycle reset */ + set_global_reset(0); + reset = 0x06; + break; + case ME_HFS_ACK_PWR_CYCLE: + /* Power cycle reset */ + set_global_reset(0); + reset = 0x0e; + break; + case ME_HFS_ACK_GBL_RESET: + /* Global reset */ + set_global_reset(1); + reset = 0x0e; + break; + case ME_HFS_ACK_S3: + case ME_HFS_ACK_S4: + case ME_HFS_ACK_S5: + break; + } + + /* Perform the requested reset */ + if (reset) { + outb(reset, 0xcf9); + cpu_hlt(); + } + return -1; +} diff --git a/arch/x86/cpu/ivybridge/me_status.c b/arch/x86/cpu/ivybridge/me_status.c new file mode 100644 index 0000000..15cf69f --- /dev/null +++ b/arch/x86/cpu/ivybridge/me_status.c @@ -0,0 +1,195 @@ +/* + * From Coreboot src/southbridge/intel/bd82x6x/me_status.c + * + * Copyright (C) 2011 The Chromium OS Authors. All rights reserved. + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include <common.h> +#include <asm/arch/me.h> + +/* HFS1[3:0] Current Working State Values */ +static const char *const me_cws_values[] = { + [ME_HFS_CWS_RESET] = "Reset", + [ME_HFS_CWS_INIT] = "Initializing", + [ME_HFS_CWS_REC] = "Recovery", + [ME_HFS_CWS_NORMAL] = "Normal", + [ME_HFS_CWS_WAIT] = "Platform Disable Wait", + [ME_HFS_CWS_TRANS] = "OP State Transition", + [ME_HFS_CWS_INVALID] = "Invalid CPU Plugged In" +}; + +/* HFS1[8:6] Current Operation State Values */ +static const char *const me_opstate_values[] = { + [ME_HFS_STATE_PREBOOT] = "Preboot", + [ME_HFS_STATE_M0_UMA] = "M0 with UMA", + [ME_HFS_STATE_M3] = "M3 without UMA", + [ME_HFS_STATE_M0] = "M0 without UMA", + [ME_HFS_STATE_BRINGUP] = "Bring up", + [ME_HFS_STATE_ERROR] = "M0 without UMA but with error" +}; + +/* HFS[19:16] Current Operation Mode Values */ +static const char *const me_opmode_values[] = { + [ME_HFS_MODE_NORMAL] = "Normal", + [ME_HFS_MODE_DEBUG] = "Debug", + [ME_HFS_MODE_DIS] = "Soft Temporary Disable", + [ME_HFS_MODE_OVER_JMPR] = "Security Override via Jumper", + [ME_HFS_MODE_OVER_MEI] = "Security Override via MEI Message" +}; + +/* HFS[15:12] Error Code Values */ +static const char *const me_error_values[] = { + [ME_HFS_ERROR_NONE] = "No Error", + [ME_HFS_ERROR_UNCAT] = "Uncategorized Failure", + [ME_HFS_ERROR_IMAGE] = "Image Failure", + [ME_HFS_ERROR_DEBUG] = "Debug Failure" +}; + +/* GMES[31:28] ME Progress Code */ +static const char *const me_progress_values[] = { + [ME_GMES_PHASE_ROM] = "ROM Phase", + [ME_GMES_PHASE_BUP] = "BUP Phase", + [ME_GMES_PHASE_UKERNEL] = "uKernel Phase", + [ME_GMES_PHASE_POLICY] = "Policy Module", + [ME_GMES_PHASE_MODULE] = "Module Loading", + [ME_GMES_PHASE_UNKNOWN] = "Unknown", + [ME_GMES_PHASE_HOST] = "Host Communication" +}; + +/* GMES[27:24] Power Management Event */ +static const char *const me_pmevent_values[] = { + [0x00] = "Clean Moff->Mx wake", + [0x01] = "Moff->Mx wake after an error", + [0x02] = "Clean global reset", + [0x03] = "Global reset after an error", + [0x04] = "Clean Intel ME reset", + [0x05] = "Intel ME reset due to exception", + [0x06] = "Pseudo-global reset", + [0x07] = "S0/M0->Sx/M3", + [0x08] = "Sx/M3->S0/M0", + [0x09] = "Non-power cycle reset", + [0x0a] = "Power cycle reset through M3", + [0x0b] = "Power cycle reset through Moff", + [0x0c] = "Sx/Mx->Sx/Moff" +}; + +/* Progress Code 0 states */ +static const char *const me_progress_rom_values[] = { + [0x00] = "BEGIN", + [0x06] = "DISABLE" +}; + +/* Progress Code 1 states */ +static const char *const me_progress_bup_values[] = { + [0x00] = "Initialization starts", + [0x01] = "Disable the host wake event", + [0x04] = "Flow determination start process", + [0x08] = "Error reading/matching the VSCC table in the descriptor", + [0x0a] = "Check to see if straps say ME DISABLED", + [0x0b] = "Timeout waiting for PWROK", + [0x0d] = "Possibly handle BUP manufacturing override strap", + [0x11] = "Bringup in M3", + [0x12] = "Bringup in M0", + [0x13] = "Flow detection error", + [0x15] = "M3 clock switching error", + [0x18] = "M3 kernel load", + [0x1c] = "T34 missing - cannot program ICC", + [0x1f] = "Waiting for DID BIOS message", + [0x20] = "Waiting for DID BIOS message failure", + [0x21] = "DID reported an error", + [0x22] = "Enabling UMA", + [0x23] = "Enabling UMA error", + [0x24] = "Sending DID Ack to BIOS", + [0x25] = "Sending DID Ack to BIOS error", + [0x26] = "Switching clocks in M0", + [0x27] = "Switching clocks in M0 error", + [0x28] = "ME in temp disable", + [0x32] = "M0 kernel load", +}; + +/* Progress Code 3 states */ +static const char *const me_progress_policy_values[] = { + [0x00] = "Entery into Policy Module", + [0x03] = "Received S3 entry", + [0x04] = "Received S4 entry", + [0x05] = "Received S5 entry", + [0x06] = "Received UPD entry", + [0x07] = "Received PCR entry", + [0x08] = "Received NPCR entry", + [0x09] = "Received host wake", + [0x0a] = "Received AC<>DC switch", + [0x0b] = "Received DRAM Init Done", + [0x0c] = "VSCC Data not found for flash device", + [0x0d] = "VSCC Table is not valid", + [0x0e] = "Flash Partition Boundary is outside address space", + [0x0f] = "ME cannot access the chipset descriptor region", + [0x10] = "Required VSCC values for flash parts do not match", +}; + +void intel_me_status(struct me_hfs *hfs, struct me_gmes *gmes) +{ + /* Check Current States */ + debug("ME: FW Partition Table : %s\n", + hfs->fpt_bad ? "BAD" : "OK"); + debug("ME: Bringup Loader Failure : %s\n", + hfs->ft_bup_ld_flr ? "YES" : "NO"); + debug("ME: Firmware Init Complete : %s\n", + hfs->fw_init_complete ? "YES" : "NO"); + debug("ME: Manufacturing Mode : %s\n", + hfs->mfg_mode ? "YES" : "NO"); + debug("ME: Boot Options Present : %s\n", + hfs->boot_options_present ? "YES" : "NO"); + debug("ME: Update In Progress : %s\n", + hfs->update_in_progress ? "YES" : "NO"); + debug("ME: Current Working State : %s\n", + me_cws_values[hfs->working_state]); + debug("ME: Current Operation State : %s\n", + me_opstate_values[hfs->operation_state]); + debug("ME: Current Operation Mode : %s\n", + me_opmode_values[hfs->operation_mode]); + debug("ME: Error Code : %s\n", + me_error_values[hfs->error_code]); + debug("ME: Progress Phase : %s\n", + me_progress_values[gmes->progress_code]); + debug("ME: Power Management Event : %s\n", + me_pmevent_values[gmes->current_pmevent]); + + debug("ME: Progress Phase State : "); + switch (gmes->progress_code) { + case ME_GMES_PHASE_ROM: /* ROM Phase */ + debug("%s", me_progress_rom_values[gmes->current_state]); + break; + + case ME_GMES_PHASE_BUP: /* Bringup Phase */ + if (gmes->current_state < ARRAY_SIZE(me_progress_bup_values) && + me_progress_bup_values[gmes->current_state]) + debug("%s", + me_progress_bup_values[gmes->current_state]); + else + debug("0x%02x", gmes->current_state); + break; + + case ME_GMES_PHASE_POLICY: /* Policy Module Phase */ + if (gmes->current_state < + ARRAY_SIZE(me_progress_policy_values) && + me_progress_policy_values[gmes->current_state]) + debug("%s", + me_progress_policy_values[gmes->current_state]); + else + debug("0x%02x", gmes->current_state); + break; + + case ME_GMES_PHASE_HOST: /* Host Communication Phase */ + if (!gmes->current_state) + debug("Host communication established"); + else + debug("0x%02x", gmes->current_state); + break; + + default: + debug("Unknown 0x%02x", gmes->current_state); + } + debug("\n"); +} diff --git a/arch/x86/cpu/ivybridge/report_platform.c b/arch/x86/cpu/ivybridge/report_platform.c new file mode 100644 index 0000000..69e31b3 --- /dev/null +++ b/arch/x86/cpu/ivybridge/report_platform.c @@ -0,0 +1,89 @@ +/* + * From Coreboot src/northbridge/intel/sandybridge/report_platform.c + * + * Copyright (C) 2012 Google Inc. + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include <common.h> +#include <asm/cpu.h> +#include <asm/pci.h> +#include <asm/arch/pch.h> + +static void report_cpu_info(void) +{ + char cpu_string[CPU_MAX_NAME_LEN], *cpu_name; + const char *mode[] = {"NOT ", ""}; + struct cpuid_result cpuidr; + int vt, txt, aes; + u32 index; + + index = 0x80000000; + cpuidr = cpuid(index); + if (cpuidr.eax < 0x80000004) { + strcpy(cpu_string, "Platform info not available"); + cpu_name = cpu_string; + } else { + cpu_name = cpu_get_name(cpu_string); + } + + cpuidr = cpuid(1); + debug("CPU id(%x): %s\n", cpuidr.eax, cpu_name); + aes = (cpuidr.ecx & (1 << 25)) ? 1 : 0; + txt = (cpuidr.ecx & (1 << 6)) ? 1 : 0; + vt = (cpuidr.ecx & (1 << 5)) ? 1 : 0; + debug("AES %ssupported, TXT %ssupported, VT %ssupported\n", + mode[aes], mode[txt], mode[vt]); +} + +/* The PCI id name match comes from Intel document 472178 */ +static struct { + u16 dev_id; + const char *dev_name; +} pch_table[] = { + {0x1E41, "Desktop Sample"}, + {0x1E42, "Mobile Sample"}, + {0x1E43, "SFF Sample"}, + {0x1E44, "Z77"}, + {0x1E45, "H71"}, + {0x1E46, "Z75"}, + {0x1E47, "Q77"}, + {0x1E48, "Q75"}, + {0x1E49, "B75"}, + {0x1E4A, "H77"}, + {0x1E53, "C216"}, + {0x1E55, "QM77"}, + {0x1E56, "QS77"}, + {0x1E58, "UM77"}, + {0x1E57, "HM77"}, + {0x1E59, "HM76"}, + {0x1E5D, "HM75"}, + {0x1E5E, "HM70"}, + {0x1E5F, "NM70"}, +}; + +static void report_pch_info(void) +{ + const char *pch_type = "Unknown"; + int i; + u16 dev_id; + uint8_t rev_id; + + dev_id = pci_read_config16(PCH_LPC_DEV, 2); + for (i = 0; i < ARRAY_SIZE(pch_table); i++) { + if (pch_table[i].dev_id == dev_id) { + pch_type = pch_table[i].dev_name; + break; + } + } + rev_id = pci_read_config8(PCH_LPC_DEV, 8); + debug("PCH type: %s, device id: %x, rev id %x\n", pch_type, dev_id, + rev_id); +} + +void report_platform_info(void) +{ + report_cpu_info(); + report_pch_info(); +} diff --git a/arch/x86/cpu/ivybridge/sdram.c b/arch/x86/cpu/ivybridge/sdram.c index 5f9ae5e..df2b990 100644 --- a/arch/x86/cpu/ivybridge/sdram.c +++ b/arch/x86/cpu/ivybridge/sdram.c @@ -11,10 +11,561 @@ */ #include <common.h> +#include <errno.h> +#include <fdtdec.h> +#include <malloc.h> +#include <asm/processor.h> +#include <asm/gpio.h> +#include <asm/global_data.h> +#include <asm/pci.h> +#include <asm/arch/me.h> +#include <asm/arch/pei_data.h> +#include <asm/arch/pch.h> +#include <asm/post.h> +#include <asm/arch/sandybridge.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* + * This function looks for the highest region of memory lower than 4GB which + * has enough space for U-Boot where U-Boot is aligned on a page boundary. + * It overrides the default implementation found elsewhere which simply + * picks the end of ram, wherever that may be. The location of the stack, + * the relocation address, and how far U-Boot is moved by relocation are + * set in the global data structure. + */ +ulong board_get_usable_ram_top(ulong total_size) +{ + struct memory_info *info = &gd->arch.meminfo; + uintptr_t dest_addr = 0; + struct memory_area *largest = NULL; + int i; + + /* Find largest area of memory below 4GB */ + + for (i = 0; i < info->num_areas; i++) { + struct memory_area *area = &info->area[i]; + + if (area->start >= 1ULL << 32) + continue; + if (!largest || area->size > largest->size) + largest = area; + } + + /* If no suitable area was found, return an error. */ + assert(largest); + if (!largest || largest->size < (2 << 20)) + panic("No available memory found for relocation"); + + dest_addr = largest->start + largest->size; + + return (ulong)dest_addr; +} + +void dram_init_banksize(void) +{ + struct memory_info *info = &gd->arch.meminfo; + int num_banks; + int i; + + for (i = 0, num_banks = 0; i < info->num_areas; i++) { + struct memory_area *area = &info->area[i]; + + if (area->start >= 1ULL << 32) + continue; + gd->bd->bi_dram[num_banks].start = area->start; + gd->bd->bi_dram[num_banks].size = area->size; + num_banks++; + } +} + +static const char *const ecc_decoder[] = { + "inactive", + "active on IO", + "disabled on IO", + "active" +}; + +/* + * Dump in the log memory controller configuration as read from the memory + * controller registers. + */ +static void report_memory_config(void) +{ + u32 addr_decoder_common, addr_decode_ch[2]; + int i; + + addr_decoder_common = readl(MCHBAR_REG(0x5000)); + addr_decode_ch[0] = readl(MCHBAR_REG(0x5004)); + addr_decode_ch[1] = readl(MCHBAR_REG(0x5008)); + + debug("memcfg DDR3 clock %d MHz\n", + (readl(MCHBAR_REG(0x5e04)) * 13333 * 2 + 50) / 100); + debug("memcfg channel assignment: A: %d, B % d, C % d\n", + addr_decoder_common & 3, + (addr_decoder_common >> 2) & 3, + (addr_decoder_common >> 4) & 3); + + for (i = 0; i < ARRAY_SIZE(addr_decode_ch); i++) { + u32 ch_conf = addr_decode_ch[i]; + debug("memcfg channel[%d] config (%8.8x):\n", i, ch_conf); + debug(" ECC %s\n", ecc_decoder[(ch_conf >> 24) & 3]); + debug(" enhanced interleave mode %s\n", + ((ch_conf >> 22) & 1) ? "on" : "off"); + debug(" rank interleave %s\n", + ((ch_conf >> 21) & 1) ? "on" : "off"); + debug(" DIMMA %d MB width x%d %s rank%s\n", + ((ch_conf >> 0) & 0xff) * 256, + ((ch_conf >> 19) & 1) ? 16 : 8, + ((ch_conf >> 17) & 1) ? "dual" : "single", + ((ch_conf >> 16) & 1) ? "" : ", selected"); + debug(" DIMMB %d MB width x%d %s rank%s\n", + ((ch_conf >> 8) & 0xff) * 256, + ((ch_conf >> 20) & 1) ? 16 : 8, + ((ch_conf >> 18) & 1) ? "dual" : "single", + ((ch_conf >> 16) & 1) ? ", selected" : ""); + } +} + +static void post_system_agent_init(struct pei_data *pei_data) +{ + /* If PCIe init is skipped, set the PEG clock gating */ + if (!pei_data->pcie_init) + setbits_le32(MCHBAR_REG(0x7010), 1); +} + +static asmlinkage void console_tx_byte(unsigned char byte) +{ +#ifdef DEBUG + putc(byte); +#endif +} + +/** + * Find the PEI executable in the ROM and execute it. + * + * @param pei_data: configuration data for UEFI PEI reference code + */ +int sdram_initialise(struct pei_data *pei_data) +{ + unsigned version; + const char *data; + uint16_t done; + int ret; + + report_platform_info(); + + /* Wait for ME to be ready */ + ret = intel_early_me_init(); + if (ret) + return ret; + ret = intel_early_me_uma_size(); + if (ret < 0) + return ret; + + debug("Starting UEFI PEI System Agent\n"); + + /* If MRC data is not found we cannot continue S3 resume. */ + if (pei_data->boot_mode == PEI_BOOT_RESUME && !pei_data->mrc_input) { + debug("Giving up in sdram_initialize: No MRC data\n"); + outb(0x6, PORT_RESET); + cpu_hlt(); + } + + /* Pass console handler in pei_data */ + pei_data->tx_byte = console_tx_byte; + + debug("PEI data at %p, size %x:\n", pei_data, sizeof(*pei_data)); + + data = (char *)CONFIG_X86_MRC_START; + if (data) { + int rv; + int (*func)(struct pei_data *); + + debug("Calling MRC at %p\n", data); + post_code(POST_PRE_MRC); + func = (int (*)(struct pei_data *))data; + rv = func(pei_data); + post_code(POST_MRC); + if (rv) { + switch (rv) { + case -1: + printf("PEI version mismatch.\n"); + break; + case -2: + printf("Invalid memory frequency.\n"); + break; + default: + printf("MRC returned %x.\n", rv); + } + printf("Nonzero MRC return value.\n"); + return -EFAULT; + } + } else { + printf("UEFI PEI System Agent not found.\n"); + return -ENOSYS; + } + +#if CONFIG_USBDEBUG + /* mrc.bin reconfigures USB, so reinit it to have debug */ + early_usbdebug_init(); +#endif + + version = readl(MCHBAR_REG(0x5034)); + debug("System Agent Version %d.%d.%d Build %d\n", + version >> 24 , (version >> 16) & 0xff, + (version >> 8) & 0xff, version & 0xff); + + /* + * Send ME init done for SandyBridge here. This is done inside the + * SystemAgent binary on IvyBridge + */ + done = pci_read_config32(PCH_DEV, PCI_DEVICE_ID); + done &= BASE_REV_MASK; + if (BASE_REV_SNB == done) + intel_early_me_init_done(ME_INIT_STATUS_SUCCESS); + else + intel_early_me_status(); + + post_system_agent_init(pei_data); + report_memory_config(); + + return 0; +} + +static int copy_spd(struct pei_data *peid) +{ + const int gpio_vector[] = {41, 42, 43, 10, -1}; + int spd_index; + const void *blob = gd->fdt_blob; + int node, spd_node; + int ret, i; + + for (i = 0; ; i++) { + if (gpio_vector[i] == -1) + break; + ret = gpio_requestf(gpio_vector[i], "spd_id%d", i); + if (ret) { + debug("%s: Could not request gpio %d\n", __func__, + gpio_vector[i]); + return ret; + } + } + spd_index = gpio_get_values_as_int(gpio_vector); + debug("spd index %d\n", spd_index); + node = fdtdec_next_compatible(blob, 0, COMPAT_MEMORY_SPD); + if (node < 0) { + printf("SPD data not found.\n"); + return -ENOENT; + } + + for (spd_node = fdt_first_subnode(blob, node); + spd_node > 0; + spd_node = fdt_next_subnode(blob, spd_node)) { + const char *data; + int len; + + if (fdtdec_get_int(blob, spd_node, "reg", -1) != spd_index) + continue; + data = fdt_getprop(blob, spd_node, "data", &len); + if (len < sizeof(peid->spd_data[0])) { + printf("Missing SPD data\n"); + return -EINVAL; + } + + debug("Using SDRAM SPD data for '%s'\n", + fdt_get_name(blob, spd_node, NULL)); + memcpy(peid->spd_data[0], data, sizeof(peid->spd_data[0])); + break; + } + + if (spd_node < 0) { + printf("No SPD data found for index %d\n", spd_index); + return -ENOENT; + } + + return 0; +} + +/** + * add_memory_area() - Add a new usable memory area to our list + * + * Note: @start and @end must not span the first 4GB boundary + * + * @info: Place to store memory info + * @start: Start of this memory area + * @end: End of this memory area + 1 + */ +static int add_memory_area(struct memory_info *info, + uint64_t start, uint64_t end) +{ + struct memory_area *ptr; + + if (info->num_areas == CONFIG_NR_DRAM_BANKS) + return -ENOSPC; + + ptr = &info->area[info->num_areas]; + ptr->start = start; + ptr->size = end - start; + info->total_memory += ptr->size; + if (ptr->start < (1ULL << 32)) + info->total_32bit_memory += ptr->size; + debug("%d: memory %llx size %llx, total now %llx / %llx\n", + info->num_areas, ptr->start, ptr->size, + info->total_32bit_memory, info->total_memory); + info->num_areas++; + + return 0; +} + +/** + * sdram_find() - Find available memory + * + * This is a bit complicated since on x86 there are system memory holes all + * over the place. We create a list of available memory blocks + */ +static int sdram_find(pci_dev_t dev) +{ + struct memory_info *info = &gd->arch.meminfo; + uint32_t tseg_base, uma_size, tolud; + uint64_t tom, me_base, touud; + uint64_t uma_memory_base = 0; + uint64_t uma_memory_size; + unsigned long long tomk; + uint16_t ggc; + + /* Total Memory 2GB example: + * + * 00000000 0000MB-1992MB 1992MB RAM (writeback) + * 7c800000 1992MB-2000MB 8MB TSEG (SMRR) + * 7d000000 2000MB-2002MB 2MB GFX GTT (uncached) + * 7d200000 2002MB-2034MB 32MB GFX UMA (uncached) + * 7f200000 2034MB TOLUD + * 7f800000 2040MB MEBASE + * 7f800000 2040MB-2048MB 8MB ME UMA (uncached) + * 80000000 2048MB TOM + * 100000000 4096MB-4102MB 6MB RAM (writeback) + * + * Total Memory 4GB example: + * + * 00000000 0000MB-2768MB 2768MB RAM (writeback) + * ad000000 2768MB-2776MB 8MB TSEG (SMRR) + * ad800000 2776MB-2778MB 2MB GFX GTT (uncached) + * ada00000 2778MB-2810MB 32MB GFX UMA (uncached) + * afa00000 2810MB TOLUD + * ff800000 4088MB MEBASE + * ff800000 4088MB-4096MB 8MB ME UMA (uncached) + * 100000000 4096MB TOM + * 100000000 4096MB-5374MB 1278MB RAM (writeback) + * 14fe00000 5368MB TOUUD + */ + + /* Top of Upper Usable DRAM, including remap */ + touud = pci_read_config32(dev, TOUUD+4); + touud <<= 32; + touud |= pci_read_config32(dev, TOUUD); + + /* Top of Lower Usable DRAM */ + tolud = pci_read_config32(dev, TOLUD); + + /* Top of Memory - does not account for any UMA */ + tom = pci_read_config32(dev, 0xa4); + tom <<= 32; + tom |= pci_read_config32(dev, 0xa0); + + debug("TOUUD %llx TOLUD %08x TOM %llx\n", touud, tolud, tom); + + /* ME UMA needs excluding if total memory <4GB */ + me_base = pci_read_config32(dev, 0x74); + me_base <<= 32; + me_base |= pci_read_config32(dev, 0x70); + + debug("MEBASE %llx\n", me_base); + + /* TODO: Get rid of all this shifting by 10 bits */ + tomk = tolud >> 10; + if (me_base == tolud) { + /* ME is from MEBASE-TOM */ + uma_size = (tom - me_base) >> 10; + /* Increment TOLUD to account for ME as RAM */ + tolud += uma_size << 10; + /* UMA starts at old TOLUD */ + uma_memory_base = tomk * 1024ULL; + uma_memory_size = uma_size * 1024ULL; + debug("ME UMA base %llx size %uM\n", me_base, uma_size >> 10); + } + + /* Graphics memory comes next */ + ggc = pci_read_config16(dev, GGC); + if (!(ggc & 2)) { + debug("IGD decoded, subtracting "); + + /* Graphics memory */ + uma_size = ((ggc >> 3) & 0x1f) * 32 * 1024ULL; + debug("%uM UMA", uma_size >> 10); + tomk -= uma_size; + uma_memory_base = tomk * 1024ULL; + uma_memory_size += uma_size * 1024ULL; + + /* GTT Graphics Stolen Memory Size (GGMS) */ + uma_size = ((ggc >> 8) & 0x3) * 1024ULL; + tomk -= uma_size; + uma_memory_base = tomk * 1024ULL; + uma_memory_size += uma_size * 1024ULL; + debug(" and %uM GTT\n", uma_size >> 10); + } + + /* Calculate TSEG size from its base which must be below GTT */ + tseg_base = pci_read_config32(dev, 0xb8); + uma_size = (uma_memory_base - tseg_base) >> 10; + tomk -= uma_size; + uma_memory_base = tomk * 1024ULL; + uma_memory_size += uma_size * 1024ULL; + debug("TSEG base 0x%08x size %uM\n", tseg_base, uma_size >> 10); + + debug("Available memory below 4GB: %lluM\n", tomk >> 10); + + /* Report the memory regions */ + add_memory_area(info, 1 << 20, 2 << 28); + add_memory_area(info, (2 << 28) + (2 << 20), 4 << 28); + add_memory_area(info, (4 << 28) + (2 << 20), tseg_base); + add_memory_area(info, 1ULL << 32, touud); + /* + * If >= 4GB installed then memory from TOLUD to 4GB + * is remapped above TOM, TOUUD will account for both + */ + if (touud > (1ULL << 32ULL)) { + debug("Available memory above 4GB: %lluM\n", + (touud >> 20) - 4096); + } + + return 0; +} + +static void rcba_config(void) +{ + /* + * GFX INTA -> PIRQA (MSI) + * D28IP_P3IP WLAN INTA -> PIRQB + * D29IP_E1P EHCI1 INTA -> PIRQD + * D26IP_E2P EHCI2 INTA -> PIRQF + * D31IP_SIP SATA INTA -> PIRQF (MSI) + * D31IP_SMIP SMBUS INTB -> PIRQH + * D31IP_TTIP THRT INTC -> PIRQA + * D27IP_ZIP HDA INTA -> PIRQA (MSI) + * + * TRACKPAD -> PIRQE (Edge Triggered) + * TOUCHSCREEN -> PIRQG (Edge Triggered) + */ + + /* Device interrupt pin register (board specific) */ + writel((INTC << D31IP_TTIP) | (NOINT << D31IP_SIP2) | + (INTB << D31IP_SMIP) | (INTA << D31IP_SIP), RCB_REG(D31IP)); + writel(NOINT << D30IP_PIP, RCB_REG(D30IP)); + writel(INTA << D29IP_E1P, RCB_REG(D29IP)); + writel(INTA << D28IP_P3IP, RCB_REG(D28IP)); + writel(INTA << D27IP_ZIP, RCB_REG(D27IP)); + writel(INTA << D26IP_E2P, RCB_REG(D26IP)); + writel(NOINT << D25IP_LIP, RCB_REG(D25IP)); + writel(NOINT << D22IP_MEI1IP, RCB_REG(D22IP)); + + /* Device interrupt route registers */ + writel(DIR_ROUTE(PIRQB, PIRQH, PIRQA, PIRQC), RCB_REG(D31IR)); + writel(DIR_ROUTE(PIRQD, PIRQE, PIRQF, PIRQG), RCB_REG(D29IR)); + writel(DIR_ROUTE(PIRQB, PIRQC, PIRQD, PIRQE), RCB_REG(D28IR)); + writel(DIR_ROUTE(PIRQA, PIRQH, PIRQA, PIRQB), RCB_REG(D27IR)); + writel(DIR_ROUTE(PIRQF, PIRQE, PIRQG, PIRQH), RCB_REG(D26IR)); + writel(DIR_ROUTE(PIRQA, PIRQB, PIRQC, PIRQD), RCB_REG(D25IR)); + writel(DIR_ROUTE(PIRQA, PIRQB, PIRQC, PIRQD), RCB_REG(D22IR)); + + /* Enable IOAPIC (generic) */ + writew(0x0100, RCB_REG(OIC)); + /* PCH BWG says to read back the IOAPIC enable register */ + (void)readw(RCB_REG(OIC)); + + /* Disable unused devices (board specific) */ + setbits_le32(RCB_REG(FD), PCH_DISABLE_ALWAYS); +} int dram_init(void) { - /* TODO: Set up DRAM */ + struct pei_data pei_data __aligned(8) = { + .pei_version = PEI_VERSION, + .mchbar = DEFAULT_MCHBAR, + .dmibar = DEFAULT_DMIBAR, + .epbar = DEFAULT_EPBAR, + .pciexbar = CONFIG_MMCONF_BASE_ADDRESS, + .smbusbar = SMBUS_IO_BASE, + .wdbbar = 0x4000000, + .wdbsize = 0x1000, + .hpet_address = CONFIG_HPET_ADDRESS, + .rcba = DEFAULT_RCBABASE, + .pmbase = DEFAULT_PMBASE, + .gpiobase = DEFAULT_GPIOBASE, + .thermalbase = 0xfed08000, + .system_type = 0, /* 0 Mobile, 1 Desktop/Server */ + .tseg_size = CONFIG_SMM_TSEG_SIZE, + .ts_addresses = { 0x00, 0x00, 0x00, 0x00 }, + .ec_present = 1, + .ddr3lv_support = 1, + /* + * 0 = leave channel enabled + * 1 = disable dimm 0 on channel + * 2 = disable dimm 1 on channel + * 3 = disable dimm 0+1 on channel + */ + .dimm_channel0_disabled = 2, + .dimm_channel1_disabled = 2, + .max_ddr3_freq = 1600, + .usb_port_config = { + /* + * Empty and onboard Ports 0-7, set to un-used pin + * OC3 + */ + { 0, 3, 0x0000 }, /* P0= Empty */ + { 1, 0, 0x0040 }, /* P1= Left USB 1 (OC0) */ + { 1, 1, 0x0040 }, /* P2= Left USB 2 (OC1) */ + { 1, 3, 0x0040 }, /* P3= SDCARD (no OC) */ + { 0, 3, 0x0000 }, /* P4= Empty */ + { 1, 3, 0x0040 }, /* P5= WWAN (no OC) */ + { 0, 3, 0x0000 }, /* P6= Empty */ + { 0, 3, 0x0000 }, /* P7= Empty */ + /* + * Empty and onboard Ports 8-13, set to un-used pin + * OC4 + */ + { 1, 4, 0x0040 }, /* P8= Camera (no OC) */ + { 1, 4, 0x0040 }, /* P9= Bluetooth (no OC) */ + { 0, 4, 0x0000 }, /* P10= Empty */ + { 0, 4, 0x0000 }, /* P11= Empty */ + { 0, 4, 0x0000 }, /* P12= Empty */ + { 0, 4, 0x0000 }, /* P13= Empty */ + }, + }; + pci_dev_t dev = PCI_BDF(0, 0, 0); + int ret; + + debug("Boot mode %d\n", gd->arch.pei_boot_mode); + debug("mcr_input %p\n", pei_data.mrc_input); + pei_data.boot_mode = gd->arch.pei_boot_mode; + ret = copy_spd(&pei_data); + if (!ret) + ret = sdram_initialise(&pei_data); + if (ret) + return ret; + + rcba_config(); + quick_ram_check(); + + writew(0xCAFE, MCHBAR_REG(SSKPD)); + + post_code(POST_DRAM); + + ret = sdram_find(dev); + if (ret) + return ret; + + gd->ram_size = gd->arch.meminfo.total_32bit_memory; return 0; } diff --git a/arch/x86/cpu/start.S b/arch/x86/cpu/start.S index 1b738f9..b0d0ac0 100644 --- a/arch/x86/cpu/start.S +++ b/arch/x86/cpu/start.S @@ -78,20 +78,22 @@ car_init_ret: * We now have CONFIG_SYS_CAR_SIZE bytes of Cache-As-RAM (or SRAM, * or fully initialised SDRAM - we really don't care which) * starting at CONFIG_SYS_CAR_ADDR to be used as a temporary stack - * and early malloc area. + * and early malloc area. The MRC requires some space at the top. * * Stack grows down from top of CAR. We have: * * top-> CONFIG_SYS_CAR_ADDR + CONFIG_SYS_CAR_SIZE + * MRC area * global_data * x86 global descriptor table * early malloc area * stack * bottom-> CONFIG_SYS_CAR_ADDR */ - - /* Stack grows down from top of CAR */ - movl $(CONFIG_SYS_CAR_ADDR + CONFIG_SYS_CAR_SIZE), %esp + movl $(CONFIG_SYS_CAR_ADDR + CONFIG_SYS_CAR_SIZE - 4), %esp +#ifdef CONFIG_DCACHE_RAM_MRC_VAR_SIZE + subl $CONFIG_DCACHE_RAM_MRC_VAR_SIZE, %esp +#endif /* Reserve space on stack for global data */ subl $GENERATED_GBL_DATA_SIZE, %esp diff --git a/arch/x86/dts/link.dts b/arch/x86/dts/link.dts index 74b2198..9329916 100644 --- a/arch/x86/dts/link.dts +++ b/arch/x86/dts/link.dts @@ -41,6 +41,117 @@ chosen { }; memory { device_type = "memory"; reg = <0 0>; }; + spd { + compatible = "memory-spd"; + #address-cells = <1>; + #size-cells = <0>; + elpida_4Gb_1600_x16 { + reg = <0>; + data = [92 10 0b 03 04 19 02 02 + 03 52 01 08 0a 00 fe 00 + 69 78 69 3c 69 11 18 81 + 20 08 3c 3c 01 40 83 81 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 0f 11 42 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 02 fe 00 + 11 52 00 00 00 07 7f 37 + 45 42 4a 32 30 55 47 36 + 45 42 55 30 2d 47 4e 2d + 46 20 30 20 02 fe 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00]; + }; + samsung_4Gb_1600_1.35v_x16 { + reg = <1>; + data = [92 11 0b 03 04 19 02 02 + 03 11 01 08 0a 00 fe 00 + 69 78 69 3c 69 11 18 81 + f0 0a 3c 3c 01 40 83 01 + 00 80 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 0f 11 02 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 80 ce 01 + 00 00 00 00 00 00 6a 04 + 4d 34 37 31 42 35 36 37 + 34 42 48 30 2d 59 4b 30 + 20 20 00 00 80 ce 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00]; + }; + micron_4Gb_1600_1.35v_x16 { + reg = <2>; + data = [92 11 0b 03 04 19 02 02 + 03 11 01 08 0a 00 fe 00 + 69 78 69 3c 69 11 18 81 + 20 08 3c 3c 01 40 83 05 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 0f 01 02 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 80 2c 00 + 00 00 00 00 00 00 ad 75 + 34 4b 54 46 32 35 36 36 + 34 48 5a 2d 31 47 36 45 + 31 20 45 31 80 2c 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + 00 00 00 00 00 00 00 00 + ff ff ff ff ff ff ff ff + ff ff ff ff ff ff ff ff + ff ff ff ff ff ff ff ff + ff ff ff ff ff ff ff ff + ff ff ff ff ff ff ff ff + ff ff ff ff ff ff ff ff + ff ff ff ff ff ff ff ff + ff ff ff ff ff ff ff ff + ff ff ff ff ff ff ff ff + ff ff ff ff ff ff ff ff]; + }; + }; + spi { #address-cells = <1>; #size-cells = <0>; diff --git a/arch/x86/include/asm/arch-ivybridge/me.h b/arch/x86/include/asm/arch-ivybridge/me.h new file mode 100644 index 0000000..3a0809d --- /dev/null +++ b/arch/x86/include/asm/arch-ivybridge/me.h @@ -0,0 +1,356 @@ +/* + * From Coreboot src/southbridge/intel/bd82x6x/me.h + * + * Copyright (C) 2011 The Chromium OS Authors. All rights reserved. + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#ifndef _ASM_INTEL_ME_H +#define _ASM_INTEL_ME_H + +#include <linux/compiler.h> +#include <linux/types.h> + +#define ME_RETRY 100000 /* 1 second */ +#define ME_DELAY 10 /* 10 us */ + +/* + * Management Engine PCI registers + */ + +#define PCI_CPU_MEBASE_L 0x70 /* Set by MRC */ +#define PCI_CPU_MEBASE_H 0x74 /* Set by MRC */ + +#define PCI_ME_HFS 0x40 +#define ME_HFS_CWS_RESET 0 +#define ME_HFS_CWS_INIT 1 +#define ME_HFS_CWS_REC 2 +#define ME_HFS_CWS_NORMAL 5 +#define ME_HFS_CWS_WAIT 6 +#define ME_HFS_CWS_TRANS 7 +#define ME_HFS_CWS_INVALID 8 +#define ME_HFS_STATE_PREBOOT 0 +#define ME_HFS_STATE_M0_UMA 1 +#define ME_HFS_STATE_M3 4 +#define ME_HFS_STATE_M0 5 +#define ME_HFS_STATE_BRINGUP 6 +#define ME_HFS_STATE_ERROR 7 +#define ME_HFS_ERROR_NONE 0 +#define ME_HFS_ERROR_UNCAT 1 +#define ME_HFS_ERROR_IMAGE 3 +#define ME_HFS_ERROR_DEBUG 4 +#define ME_HFS_MODE_NORMAL 0 +#define ME_HFS_MODE_DEBUG 2 +#define ME_HFS_MODE_DIS 3 +#define ME_HFS_MODE_OVER_JMPR 4 +#define ME_HFS_MODE_OVER_MEI 5 +#define ME_HFS_BIOS_DRAM_ACK 1 +#define ME_HFS_ACK_NO_DID 0 +#define ME_HFS_ACK_RESET 1 +#define ME_HFS_ACK_PWR_CYCLE 2 +#define ME_HFS_ACK_S3 3 +#define ME_HFS_ACK_S4 4 +#define ME_HFS_ACK_S5 5 +#define ME_HFS_ACK_GBL_RESET 6 +#define ME_HFS_ACK_CONTINUE 7 + +struct me_hfs { + u32 working_state:4; + u32 mfg_mode:1; + u32 fpt_bad:1; + u32 operation_state:3; + u32 fw_init_complete:1; + u32 ft_bup_ld_flr:1; + u32 update_in_progress:1; + u32 error_code:4; + u32 operation_mode:4; + u32 reserved:4; + u32 boot_options_present:1; + u32 ack_data:3; + u32 bios_msg_ack:4; +} __packed; + +#define PCI_ME_UMA 0x44 + +struct me_uma { + u32 size:6; + u32 reserved_1:10; + u32 valid:1; + u32 reserved_0:14; + u32 set_to_one:1; +} __packed; + +#define PCI_ME_H_GS 0x4c +#define ME_INIT_DONE 1 +#define ME_INIT_STATUS_SUCCESS 0 +#define ME_INIT_STATUS_NOMEM 1 +#define ME_INIT_STATUS_ERROR 2 + +struct me_did { + u32 uma_base:16; + u32 reserved:8; + u32 status:4; + u32 init_done:4; +} __packed; + +#define PCI_ME_GMES 0x48 +#define ME_GMES_PHASE_ROM 0 +#define ME_GMES_PHASE_BUP 1 +#define ME_GMES_PHASE_UKERNEL 2 +#define ME_GMES_PHASE_POLICY 3 +#define ME_GMES_PHASE_MODULE 4 +#define ME_GMES_PHASE_UNKNOWN 5 +#define ME_GMES_PHASE_HOST 6 + +struct me_gmes { + u32 bist_in_prog:1; + u32 icc_prog_sts:2; + u32 invoke_mebx:1; + u32 cpu_replaced_sts:1; + u32 mbp_rdy:1; + u32 mfs_failure:1; + u32 warm_rst_req_for_df:1; + u32 cpu_replaced_valid:1; + u32 reserved_1:2; + u32 fw_upd_ipu:1; + u32 reserved_2:4; + u32 current_state:8; + u32 current_pmevent:4; + u32 progress_code:4; +} __packed; + +#define PCI_ME_HERES 0xbc +#define PCI_ME_EXT_SHA1 0x00 +#define PCI_ME_EXT_SHA256 0x02 +#define PCI_ME_HER(x) (0xc0+(4*(x))) + +struct me_heres { + u32 extend_reg_algorithm:4; + u32 reserved:26; + u32 extend_feature_present:1; + u32 extend_reg_valid:1; +} __packed; + +/* + * Management Engine MEI registers + */ + +#define MEI_H_CB_WW 0x00 +#define MEI_H_CSR 0x04 +#define MEI_ME_CB_RW 0x08 +#define MEI_ME_CSR_HA 0x0c + +struct mei_csr { + u32 interrupt_enable:1; + u32 interrupt_status:1; + u32 interrupt_generate:1; + u32 ready:1; + u32 reset:1; + u32 reserved:3; + u32 buffer_read_ptr:8; + u32 buffer_write_ptr:8; + u32 buffer_depth:8; +} __packed; + +#define MEI_ADDRESS_CORE 0x01 +#define MEI_ADDRESS_AMT 0x02 +#define MEI_ADDRESS_RESERVED 0x03 +#define MEI_ADDRESS_WDT 0x04 +#define MEI_ADDRESS_MKHI 0x07 +#define MEI_ADDRESS_ICC 0x08 +#define MEI_ADDRESS_THERMAL 0x09 + +#define MEI_HOST_ADDRESS 0 + +struct mei_header { + u32 client_address:8; + u32 host_address:8; + u32 length:9; + u32 reserved:6; + u32 is_complete:1; +} __packed; + +#define MKHI_GROUP_ID_CBM 0x00 +#define MKHI_GROUP_ID_FWCAPS 0x03 +#define MKHI_GROUP_ID_MDES 0x08 +#define MKHI_GROUP_ID_GEN 0xff + +#define MKHI_GLOBAL_RESET 0x0b + +#define MKHI_FWCAPS_GET_RULE 0x02 + +#define MKHI_MDES_ENABLE 0x09 + +#define MKHI_GET_FW_VERSION 0x02 +#define MKHI_END_OF_POST 0x0c +#define MKHI_FEATURE_OVERRIDE 0x14 + +struct mkhi_header { + u32 group_id:8; + u32 command:7; + u32 is_response:1; + u32 reserved:8; + u32 result:8; +} __packed; + +struct me_fw_version { + u16 code_minor; + u16 code_major; + u16 code_build_number; + u16 code_hot_fix; + u16 recovery_minor; + u16 recovery_major; + u16 recovery_build_number; + u16 recovery_hot_fix; +} __packed; + + +#define HECI_EOP_STATUS_SUCCESS 0x0 +#define HECI_EOP_PERFORM_GLOBAL_RESET 0x1 + +#define CBM_RR_GLOBAL_RESET 0x01 + +#define GLOBAL_RESET_BIOS_MRC 0x01 +#define GLOBAL_RESET_BIOS_POST 0x02 +#define GLOBAL_RESET_MEBX 0x03 + +struct me_global_reset { + u8 request_origin; + u8 reset_type; +} __packed; + +enum me_bios_path { + ME_NORMAL_BIOS_PATH, + ME_S3WAKE_BIOS_PATH, + ME_ERROR_BIOS_PATH, + ME_RECOVERY_BIOS_PATH, + ME_DISABLE_BIOS_PATH, + ME_FIRMWARE_UPDATE_BIOS_PATH, +}; + +struct __packed mbp_fw_version_name { + u32 major_version:16; + u32 minor_version:16; + u32 hotfix_version:16; + u32 build_version:16; +}; + +struct __packed mbp_icc_profile { + u8 num_icc_profiles; + u8 icc_profile_soft_strap; + u8 icc_profile_index; + u8 reserved; + u32 register_lock_mask[3]; +}; + +struct __packed mefwcaps_sku { + u32 full_net:1; + u32 std_net:1; + u32 manageability:1; + u32 small_business:1; + u32 l3manageability:1; + u32 intel_at:1; + u32 intel_cls:1; + u32 reserved:3; + u32 intel_mpc:1; + u32 icc_over_clocking:1; + u32 pavp:1; + u32 reserved_1:4; + u32 ipv6:1; + u32 kvm:1; + u32 och:1; + u32 vlan:1; + u32 tls:1; + u32 reserved_4:1; + u32 wlan:1; + u32 reserved_5:8; +}; + +struct __packed tdt_state_flag { + u16 lock_state:1; + u16 authenticate_module:1; + u16 s3authentication:1; + u16 flash_wear_out:1; + u16 flash_variable_security:1; + u16 wwan3gpresent:1; + u16 wwan3goob:1; + u16 reserved:9; +}; + +struct __packed tdt_state_info { + u8 state; + u8 last_theft_trigger; + struct tdt_state_flag flags; +}; + +struct __packed platform_type_rule_data { + u32 platform_target_usage_type:4; + u32 platform_target_market_type:2; + u32 super_sku:1; + u32 reserved:1; + u32 intel_me_fw_image_type:4; + u32 platform_brand:4; + u32 reserved_1:16; +}; + +struct __packed mbp_fw_caps { + struct mefwcaps_sku fw_capabilities; + u8 available; +}; + +struct __packed mbp_rom_bist_data { + u16 device_id; + u16 fuse_test_flags; + u32 umchid[4]; +}; + +struct __packed mbp_platform_key { + u32 key[8]; +}; + +struct __packed mbp_plat_type { + struct platform_type_rule_data rule_data; + u8 available; +}; + +struct __packed me_bios_payload { + struct mbp_fw_version_name fw_version_name; + struct mbp_fw_caps fw_caps_sku; + struct mbp_rom_bist_data rom_bist_data; + struct mbp_platform_key platform_key; + struct mbp_plat_type fw_plat_type; + struct mbp_icc_profile icc_profile; + struct tdt_state_info at_state; + u32 mfsintegrity; +}; + +struct __packed mbp_header { + u32 mbp_size:8; + u32 num_entries:8; + u32 rsvd:16; +}; + +struct __packed mbp_item_header { + u32 app_id:8; + u32 item_id:8; + u32 length:8; + u32 rsvd:8; +}; + +struct __packed me_fwcaps { + u32 id; + u8 length; + struct mefwcaps_sku caps_sku; + u8 reserved[3]; +}; + +/* Defined in me_status.c for both romstage and ramstage */ +void intel_me_status(struct me_hfs *hfs, struct me_gmes *gmes); + +void intel_early_me_status(void); +int intel_early_me_init(void); +int intel_early_me_uma_size(void); +int intel_early_me_init_done(u8 status); + +#endif diff --git a/arch/x86/include/asm/arch-ivybridge/pch.h b/arch/x86/include/asm/arch-ivybridge/pch.h index ae338e3..c6efdb8 100644 --- a/arch/x86/include/asm/arch-ivybridge/pch.h +++ b/arch/x86/include/asm/arch-ivybridge/pch.h @@ -31,6 +31,13 @@ /* PCI Configuration Space (D31:F0): LPC */ #define PCH_LPC_DEV PCI_BDF(0, 0x1f, 0) +#define GEN_PMCON_1 0xa0 +#define GEN_PMCON_2 0xa2 +#define GEN_PMCON_3 0xa4 +#define ETR3 0xac +#define ETR3_CWORWRE (1 << 18) +#define ETR3_CF9GR (1 << 20) + #define PMBASE 0x40 #define ACPI_CNTL 0x44 #define BIOS_CNTL 0xDC @@ -126,12 +133,97 @@ #define RPC 0x0400 /* 32bit */ #define RPFN 0x0404 /* 32bit */ +#define TRSR 0x1e00 /* 8bit */ +#define TRCR 0x1e10 /* 64bit */ +#define TWDR 0x1e18 /* 64bit */ + +#define IOTR0 0x1e80 /* 64bit */ +#define IOTR1 0x1e88 /* 64bit */ +#define IOTR2 0x1e90 /* 64bit */ +#define IOTR3 0x1e98 /* 64bit */ + +#define TCTL 0x3000 /* 8bit */ + +#define NOINT 0 +#define INTA 1 +#define INTB 2 +#define INTC 3 +#define INTD 4 + +#define DIR_IDR 12 /* Interrupt D Pin Offset */ +#define DIR_ICR 8 /* Interrupt C Pin Offset */ +#define DIR_IBR 4 /* Interrupt B Pin Offset */ +#define DIR_IAR 0 /* Interrupt A Pin Offset */ + +#define PIRQA 0 +#define PIRQB 1 +#define PIRQC 2 +#define PIRQD 3 +#define PIRQE 4 +#define PIRQF 5 +#define PIRQG 6 +#define PIRQH 7 + +/* IO Buffer Programming */ +#define IOBPIRI 0x2330 +#define IOBPD 0x2334 +#define IOBPS 0x2338 +#define IOBPS_RW_BX ((1 << 9)|(1 << 10)) +#define IOBPS_WRITE_AX ((1 << 9)|(1 << 10)) +#define IOBPS_READ_AX ((1 << 8)|(1 << 9)|(1 << 10)) + +#define D31IP 0x3100 /* 32bit */ +#define D31IP_TTIP 24 /* Thermal Throttle Pin */ +#define D31IP_SIP2 20 /* SATA Pin 2 */ +#define D31IP_SMIP 12 /* SMBUS Pin */ +#define D31IP_SIP 8 /* SATA Pin */ +#define D30IP 0x3104 /* 32bit */ +#define D30IP_PIP 0 /* PCI Bridge Pin */ +#define D29IP 0x3108 /* 32bit */ +#define D29IP_E1P 0 /* EHCI #1 Pin */ +#define D28IP 0x310c /* 32bit */ +#define D28IP_P8IP 28 /* PCI Express Port 8 */ +#define D28IP_P7IP 24 /* PCI Express Port 7 */ +#define D28IP_P6IP 20 /* PCI Express Port 6 */ +#define D28IP_P5IP 16 /* PCI Express Port 5 */ +#define D28IP_P4IP 12 /* PCI Express Port 4 */ +#define D28IP_P3IP 8 /* PCI Express Port 3 */ +#define D28IP_P2IP 4 /* PCI Express Port 2 */ +#define D28IP_P1IP 0 /* PCI Express Port 1 */ +#define D27IP 0x3110 /* 32bit */ +#define D27IP_ZIP 0 /* HD Audio Pin */ +#define D26IP 0x3114 /* 32bit */ +#define D26IP_E2P 0 /* EHCI #2 Pin */ +#define D25IP 0x3118 /* 32bit */ +#define D25IP_LIP 0 /* GbE LAN Pin */ +#define D22IP 0x3124 /* 32bit */ +#define D22IP_KTIP 12 /* KT Pin */ +#define D22IP_IDERIP 8 /* IDE-R Pin */ +#define D22IP_MEI2IP 4 /* MEI #2 Pin */ +#define D22IP_MEI1IP 0 /* MEI #1 Pin */ +#define D20IP 0x3128 /* 32bit */ +#define D20IP_XHCIIP 0 +#define D31IR 0x3140 /* 16bit */ +#define D30IR 0x3142 /* 16bit */ +#define D29IR 0x3144 /* 16bit */ +#define D28IR 0x3146 /* 16bit */ +#define D27IR 0x3148 /* 16bit */ +#define D26IR 0x314c /* 16bit */ +#define D25IR 0x3150 /* 16bit */ +#define D22IR 0x315c /* 16bit */ +#define D20IR 0x3160 /* 16bit */ +#define OIC 0x31fe /* 16bit */ + #define SPI_FREQ_SWSEQ 0x3893 #define SPI_DESC_COMP0 0x38b0 #define SPI_FREQ_WR_ERA 0x38b4 #define SOFT_RESET_CTRL 0x38f4 #define SOFT_RESET_DATA 0x38f8 +#define DIR_ROUTE(a, b, c, d) \ + (((d) << DIR_IDR) | ((c) << DIR_ICR) | \ + ((b) << DIR_IBR) | ((a) << DIR_IAR)) + #define RC 0x3400 /* 32bit */ #define HPTC 0x3404 /* 32bit */ #define GCS 0x3410 /* 32bit */ @@ -142,6 +234,27 @@ #define FD2 0x3428 /* 32bit */ #define CG 0x341c /* 32bit */ +/* Function Disable 1 RCBA 0x3418 */ +#define PCH_DISABLE_ALWAYS ((1 << 0)|(1 << 26)) +#define PCH_DISABLE_P2P (1 << 1) +#define PCH_DISABLE_SATA1 (1 << 2) +#define PCH_DISABLE_SMBUS (1 << 3) +#define PCH_DISABLE_HD_AUDIO (1 << 4) +#define PCH_DISABLE_EHCI2 (1 << 13) +#define PCH_DISABLE_LPC (1 << 14) +#define PCH_DISABLE_EHCI1 (1 << 15) +#define PCH_DISABLE_PCIE(x) (1 << (16 + x)) +#define PCH_DISABLE_THERMAL (1 << 24) +#define PCH_DISABLE_SATA2 (1 << 25) +#define PCH_DISABLE_XHCI (1 << 27) + +/* Function Disable 2 RCBA 0x3428 */ +#define PCH_DISABLE_KT (1 << 4) +#define PCH_DISABLE_IDER (1 << 3) +#define PCH_DISABLE_MEI2 (1 << 2) +#define PCH_DISABLE_MEI1 (1 << 1) +#define PCH_ENABLE_DBDF (1 << 0) + /* ICH7 GPIOBASE */ #define GPIO_USE_SEL 0x00 #define GP_IO_SEL 0x04 diff --git a/arch/x86/include/asm/arch-ivybridge/pei_data.h b/arch/x86/include/asm/arch-ivybridge/pei_data.h new file mode 100644 index 0000000..5026c8b --- /dev/null +++ b/arch/x86/include/asm/arch-ivybridge/pei_data.h @@ -0,0 +1,121 @@ +/* + * Copyright (c) 2011, Google Inc. + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#ifndef ASM_ARCH_PEI_DATA_H +#define ASM_ARCH_PEI_DATA_H + +struct pch_usb3_controller_settings { + /* 0: Disable, 1: Enable, 2: Auto, 3: Smart Auto */ + uint16_t mode; + /* 4 bit mask, 1: switchable, 0: not switchable */ + uint16_t hs_port_switch_mask; + /* 0: No xHCI preOS driver, 1: xHCI preOS driver */ + uint16_t preboot_support; + /* 0: Disable, 1: Enable */ + uint16_t xhci_streams; +}; + +typedef asmlinkage void (*tx_byte_func)(unsigned char byte); + +#define PEI_VERSION 6 + +struct __packed pei_data { + uint32_t pei_version; + uint32_t mchbar; + uint32_t dmibar; + uint32_t epbar; + uint32_t pciexbar; + uint16_t smbusbar; + uint32_t wdbbar; + uint32_t wdbsize; + uint32_t hpet_address; + uint32_t rcba; + uint32_t pmbase; + uint32_t gpiobase; + uint32_t thermalbase; + uint32_t system_type; /* 0 Mobile, 1 Desktop/Server */ + uint32_t tseg_size; + uint8_t spd_addresses[4]; + uint8_t ts_addresses[4]; + int boot_mode; + int ec_present; + int gbe_enable; + /* + * 0 = leave channel enabled + * 1 = disable dimm 0 on channel + * 2 = disable dimm 1 on channel + * 3 = disable dimm 0+1 on channel + */ + int dimm_channel0_disabled; + int dimm_channel1_disabled; + /* Seed values saved in CMOS */ + uint32_t scrambler_seed; + uint32_t scrambler_seed_s3; + /* Data read from flash and passed into MRC */ + unsigned char *mrc_input; + unsigned int mrc_input_len; + /* Data from MRC that should be saved to flash */ + unsigned char *mrc_output; + unsigned int mrc_output_len; + /* + * Max frequency DDR3 could be ran at. Could be one of four values: + * 800, 1067, 1333, 1600 + */ + uint32_t max_ddr3_freq; + /* + * USB Port Configuration: + * [0] = enable + * [1] = overcurrent pin + * [2] = length + * + * Ports 0-7 can be mapped to OC0-OC3 + * Ports 8-13 can be mapped to OC4-OC7 + * + * Port Length + * MOBILE: + * < 0x050 = Setting 1 (back panel, 1-5in, lowest tx amplitude) + * < 0x140 = Setting 2 (back panel, 5-14in, highest tx amplitude) + * DESKTOP: + * < 0x080 = Setting 1 (front/back panel, <8in, lowest tx amplitude) + * < 0x130 = Setting 2 (back panel, 8-13in, higher tx amplitude) + * < 0x150 = Setting 3 (back panel, 13-15in, higest tx amplitude) + */ + uint16_t usb_port_config[16][3]; + /* See the usb3 struct above for details */ + struct pch_usb3_controller_settings usb3; + /* + * SPD data array for onboard RAM. Specify address 0xf0, + * 0xf1, 0xf2, 0xf3 to index one of the 4 slots in + * spd_address for a given "DIMM". + */ + uint8_t spd_data[4][256]; + tx_byte_func tx_byte; + int ddr3lv_support; + /* + * pcie_init needs to be set to 1 to have the system agent initialise + * PCIe. Note: This should only be required if your system has Gen3 + * devices and it will increase your boot time by at least 100ms. + */ + int pcie_init; + /* + * N mode functionality. Leave this setting at 0. + * 0 Auto + * 1 1N + * 2 2N + */ + int nmode; + /* + * DDR refresh rate config. JEDEC Standard No.21-C Annex K allows + * for DIMM SPD data to specify whether double-rate is required for + * extended operating temperature range. + * 0 Enable double rate based upon temperature thresholds + * 1 Normal rate + * 2 Always enable double rate + */ + int ddr_refresh_rate_config; +}; + +#endif diff --git a/arch/x86/include/asm/arch-ivybridge/sandybridge.h b/arch/x86/include/asm/arch-ivybridge/sandybridge.h index a1072f2..114ee19 100644 --- a/arch/x86/include/asm/arch-ivybridge/sandybridge.h +++ b/arch/x86/include/asm/arch-ivybridge/sandybridge.h @@ -102,6 +102,8 @@ #define SSKPD 0x5d14 /* 16bit (scratchpad) */ #define BIOS_RESET_CPL 0x5da8 /* 8bit */ +void report_platform_info(void); + void sandybridge_early_init(int chipset_type); #endif diff --git a/arch/x86/include/asm/config.h b/arch/x86/include/asm/config.h index ff15828..c97d988 100644 --- a/arch/x86/include/asm/config.h +++ b/arch/x86/include/asm/config.h @@ -10,5 +10,6 @@ #define CONFIG_SYS_GENERIC_BOARD #define CONFIG_LMB #define CONFIG_SYS_BOOT_RAMDISK_HIGH +#define asmlinkage __attribute__((regparm(0))) #endif diff --git a/arch/x86/include/asm/global_data.h b/arch/x86/include/asm/global_data.h index 4ea46d7..48bbd1a 100644 --- a/arch/x86/include/asm/global_data.h +++ b/arch/x86/include/asm/global_data.h @@ -17,6 +17,18 @@ enum pei_boot_mode_t { }; +struct memory_area { + uint64_t start; + uint64_t size; +}; + +struct memory_info { + int num_areas; + uint64_t total_memory; + uint64_t total_32bit_memory; + struct memory_area area[CONFIG_NR_DRAM_BANKS]; +}; + /* Architecture-specific global data */ struct arch_global_data { struct global_data *gd_addr; /* Location of Global Data */ @@ -34,6 +46,7 @@ struct arch_global_data { struct pci_controller *hose; /* PCI hose for early use */ enum pei_boot_mode_t pei_boot_mode; const struct pch_gpio_map *gpio_map; /* board GPIO map */ + struct memory_info meminfo; /* Memory information */ }; #endif diff --git a/arch/x86/include/asm/post.h b/arch/x86/include/asm/post.h index 61dcda1..ce68839 100644 --- a/arch/x86/include/asm/post.h +++ b/arch/x86/include/asm/post.h @@ -27,6 +27,11 @@ #define POST_CPU_INIT 0x2b #define POST_EARLY_INIT 0x2c #define POST_CPU_INFO 0x2d +#define POST_PRE_MRC 0x2e +#define POST_MRC 0x2f +#define POST_DRAM 0x2f + +#define POST_RAM_FAILURE 0xea /* Output a post code using al - value must be 0 to 0xff */ #ifdef __ASSEMBLY__ diff --git a/arch/x86/include/asm/u-boot-x86.h b/arch/x86/include/asm/u-boot-x86.h index 0399417..98217dd 100644 --- a/arch/x86/include/asm/u-boot-x86.h +++ b/arch/x86/include/asm/u-boot-x86.h @@ -70,4 +70,6 @@ static inline __attribute__((no_instrument_function)) uint64_t rdtsc(void) void timer_set_tsc_base(uint64_t new_base); uint64_t timer_get_tsc(void); +void quick_ram_check(void); + #endif /* _U_BOOT_I386_H_ */ diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile index 25b672a..e146e64 100644 --- a/arch/x86/lib/Makefile +++ b/arch/x86/lib/Makefile @@ -15,6 +15,7 @@ obj-$(CONFIG_SYS_PCAT_TIMER) += pcat_timer.o obj-$(CONFIG_PCI) += pci_type1.o obj-y += relocate.o obj-y += physmem.o +obj-$(CONFIG_X86_RAMTEST) += ramtest.o obj-y += string.o obj-$(CONFIG_SYS_X86_TSC_TIMER) += tsc_timer.o obj-$(CONFIG_VIDEO_VGA) += video.o diff --git a/arch/x86/lib/ramtest.c b/arch/x86/lib/ramtest.c new file mode 100644 index 0000000..c21be03 --- /dev/null +++ b/arch/x86/lib/ramtest.c @@ -0,0 +1,79 @@ +/* + * Copyright (c) 2014 Google, Inc + * + * From Coreboot src/lib/ramtest.c + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/post.h> + +static void write_phys(unsigned long addr, u32 value) +{ +#if CONFIG_SSE2 + asm volatile( + "movnti %1, (%0)" + : /* outputs */ + : "r" (addr), "r" (value) /* inputs */ + : /* clobbers */ + ); +#else + writel(value, addr); +#endif +} + +static u32 read_phys(unsigned long addr) +{ + return readl(addr); +} + +static void phys_memory_barrier(void) +{ +#if CONFIG_SSE2 + /* Needed for movnti */ + asm volatile( + "sfence" + : + : + : "memory" + ); +#else + asm volatile("" + : + : + : "memory"); +#endif +} + +void quick_ram_check(void) +{ + int fail = 0; + u32 backup; + + backup = read_phys(CONFIG_RAMBASE); + write_phys(CONFIG_RAMBASE, 0x55555555); + phys_memory_barrier(); + if (read_phys(CONFIG_RAMBASE) != 0x55555555) + fail = 1; + write_phys(CONFIG_RAMBASE, 0xaaaaaaaa); + phys_memory_barrier(); + if (read_phys(CONFIG_RAMBASE) != 0xaaaaaaaa) + fail = 1; + write_phys(CONFIG_RAMBASE, 0x00000000); + phys_memory_barrier(); + if (read_phys(CONFIG_RAMBASE) != 0x00000000) + fail = 1; + write_phys(CONFIG_RAMBASE, 0xffffffff); + phys_memory_barrier(); + if (read_phys(CONFIG_RAMBASE) != 0xffffffff) + fail = 1; + + write_phys(CONFIG_RAMBASE, backup); + if (fail) { + post_code(POST_RAM_FAILURE); + panic("RAM INIT FAILURE!\n"); + } + phys_memory_barrier(); +} |