From e71de54a4943ac481e8bcdb0a132c52ab90f23fe Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 6 Jul 2017 14:41:52 +0300 Subject: [PATCH] x86: Add Intel Tangier support Add Intel Tangier SoC support. Intel Tangier SoC is a core part of Intel Merrifield platform. For example, Intel Edison board is based on such platform. The patch is based on work done by the following people (in alphabetical order): Aiden Park Dukjoon Jeon eric.park Fabien Chereau Scott D Phillips Sebastien Colleur Steve Sakoman Vincent Tinelli Reviewed-by: Simon Glass Reviewed-by: Bin Meng Signed-off-by: Vincent Tinelli Signed-off-by: Felipe Balbi Signed-off-by: Andy Shevchenko --- arch/x86/Kconfig | 1 + arch/x86/cpu/Makefile | 1 + arch/x86/cpu/tangier/Kconfig | 20 ++++ arch/x86/cpu/tangier/Makefile | 7 ++ arch/x86/cpu/tangier/car.S | 13 +++ arch/x86/cpu/tangier/sdram.c | 206 +++++++++++++++++++++++++++++++++ arch/x86/cpu/tangier/tangier.c | 34 ++++++ arch/x86/include/asm/sfi.h | 19 +++ 8 files changed, 301 insertions(+) create mode 100644 arch/x86/cpu/tangier/Kconfig create mode 100644 arch/x86/cpu/tangier/Makefile create mode 100644 arch/x86/cpu/tangier/car.S create mode 100644 arch/x86/cpu/tangier/sdram.c create mode 100644 arch/x86/cpu/tangier/tangier.c diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 0cd981e73e..5c8dc822ef 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -114,6 +114,7 @@ source "arch/x86/cpu/ivybridge/Kconfig" source "arch/x86/cpu/qemu/Kconfig" source "arch/x86/cpu/quark/Kconfig" source "arch/x86/cpu/queensbay/Kconfig" +source "arch/x86/cpu/tangier/Kconfig" # architecture-specific options below diff --git a/arch/x86/cpu/Makefile b/arch/x86/cpu/Makefile index e1c84ce097..999429e62b 100644 --- a/arch/x86/cpu/Makefile +++ b/arch/x86/cpu/Makefile @@ -34,6 +34,7 @@ obj-$(CONFIG_QEMU) += qemu/ obj-$(CONFIG_NORTHBRIDGE_INTEL_IVYBRIDGE) += ivybridge/ obj-$(CONFIG_INTEL_QUARK) += quark/ obj-$(CONFIG_INTEL_QUEENSBAY) += queensbay/ +obj-$(CONFIG_INTEL_TANGIER) += tangier/ obj-y += lapic.o ioapic.o obj-y += irq.o ifndef CONFIG_$(SPL_)X86_64 diff --git a/arch/x86/cpu/tangier/Kconfig b/arch/x86/cpu/tangier/Kconfig new file mode 100644 index 0000000000..92d3352f3b --- /dev/null +++ b/arch/x86/cpu/tangier/Kconfig @@ -0,0 +1,20 @@ +# +# Copyright (c) 2017 Intel Corporation +# +# SPDX-License-Identifier: GPL-2.0+ +# + +config INTEL_TANGIER + bool + depends on INTEL_MID + +config SYS_CAR_ADDR + hex + default 0x19200000 + +config SYS_CAR_SIZE + hex + default 0x4000 + help + Space in bytes in eSRAM used as Cache-As-RAM (CAR). + Note this size must not exceed eSRAM's total size. diff --git a/arch/x86/cpu/tangier/Makefile b/arch/x86/cpu/tangier/Makefile new file mode 100644 index 0000000000..d146b3f5c2 --- /dev/null +++ b/arch/x86/cpu/tangier/Makefile @@ -0,0 +1,7 @@ +# +# Copyright (c) 2017 Intel Corporation +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-y += car.o tangier.o sdram.o diff --git a/arch/x86/cpu/tangier/car.S b/arch/x86/cpu/tangier/car.S new file mode 100644 index 0000000000..6982106c19 --- /dev/null +++ b/arch/x86/cpu/tangier/car.S @@ -0,0 +1,13 @@ +/* + * Copyright (c) 2011 The Chromium OS Authors. + * (C) Copyright 2010-2011 + * Graeme Russ, + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +.section .text + +.globl car_init +car_init: + jmp car_init_ret diff --git a/arch/x86/cpu/tangier/sdram.c b/arch/x86/cpu/tangier/sdram.c new file mode 100644 index 0000000000..5743077431 --- /dev/null +++ b/arch/x86/cpu/tangier/sdram.c @@ -0,0 +1,206 @@ +/* + * Copyright (c) 2017 Intel Corporation + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +/* + * SFI tables are part of the first stage bootloader. + * + * U-Boot finds the System Table by searching 16-byte boundaries between + * physical address 0x000E0000 and 0x000FFFFF. U-Boot shall search this region + * starting at the low address and shall stop searching when the 1st valid SFI + * System Table is found. + */ +#define SFI_BASE_ADDR 0x000E0000 +#define SFI_LENGTH 0x00020000 +#define SFI_TABLE_LENGTH 16 + +static int sfi_table_check(struct sfi_table_header *sbh) +{ + char chksum = 0; + char *pos = (char *)sbh; + u32 i; + + if (sbh->len < SFI_TABLE_LENGTH) + return -ENXIO; + + if (sbh->len > SFI_LENGTH) + return -ENXIO; + + for (i = 0; i < sbh->len; i++) + chksum += *pos++; + + if (chksum) + error("sfi: Invalid checksum\n"); + + /* Checksum is OK if zero */ + return chksum ? -EILSEQ : 0; +} + +static int sfi_table_is_type(struct sfi_table_header *sbh, const char *signature) +{ + return !strncmp(sbh->sig, signature, SFI_SIGNATURE_SIZE) && + !sfi_table_check(sbh); +} + +static struct sfi_table_simple *sfi_get_table_by_sig(unsigned long addr, + const char *signature) +{ + struct sfi_table_simple *sb; + u32 i; + + for (i = 0; i < SFI_LENGTH; i += SFI_TABLE_LENGTH) { + sb = (struct sfi_table_simple *)(addr + i); + if (sfi_table_is_type(&sb->header, signature)) + return sb; + } + + return NULL; +} + +static struct sfi_table_simple *sfi_search_mmap(void) +{ + struct sfi_table_header *sbh; + struct sfi_table_simple *sb; + u32 sys_entry_cnt; + u32 i; + + /* Find SYST table */ + sb = sfi_get_table_by_sig(SFI_BASE_ADDR, SFI_SIG_SYST); + if (!sb) { + error("sfi: failed to locate SYST table\n"); + return NULL; + } + + sys_entry_cnt = (sb->header.len - sizeof(*sbh)) / 8; + + /* Search through each SYST entry for MMAP table */ + for (i = 0; i < sys_entry_cnt; i++) { + sbh = (struct sfi_table_header *)(unsigned long)sb->pentry[i]; + + if (sfi_table_is_type(sbh, SFI_SIG_MMAP)) + return (struct sfi_table_simple *)sbh; + } + + error("sfi: failed to locate SFI MMAP table\n"); + return NULL; +} + +#define sfi_for_each_mentry(i, sb, mentry) \ + for (i = 0, mentry = (struct sfi_mem_entry *)sb->pentry; \ + i < SFI_GET_NUM_ENTRIES(sb, struct sfi_mem_entry); \ + i++, mentry++) \ + +static unsigned sfi_setup_e820(unsigned max_entries, struct e820entry *entries) +{ + struct sfi_table_simple *sb; + struct sfi_mem_entry *mentry; + unsigned long long start, end, size; + int type, total = 0; + u32 i; + + sb = sfi_search_mmap(); + if (!sb) + return 0; + + sfi_for_each_mentry(i, sb, mentry) { + start = mentry->phys_start; + size = mentry->pages << 12; + end = start + size; + + if (start > end) + continue; + + /* translate SFI mmap type to E820 map type */ + switch (mentry->type) { + case SFI_MEM_CONV: + type = E820_RAM; + break; + case SFI_MEM_UNUSABLE: + case SFI_RUNTIME_SERVICE_DATA: + continue; + default: + type = E820_RESERVED; + } + + if (total == E820MAX) + break; + entries[total].addr = start; + entries[total].size = size; + entries[total].type = type; + + total++; + } + + return total; +} + +static int sfi_get_bank_size(void) +{ + struct sfi_table_simple *sb; + struct sfi_mem_entry *mentry; + int bank = 0; + u32 i; + + sb = sfi_search_mmap(); + if (!sb) + return 0; + + sfi_for_each_mentry(i, sb, mentry) { + if (mentry->type != SFI_MEM_CONV) + continue; + + gd->bd->bi_dram[bank].start = mentry->phys_start; + gd->bd->bi_dram[bank].size = mentry->pages << 12; + bank++; + } + + return bank; +} + +static phys_size_t sfi_get_ram_size(void) +{ + struct sfi_table_simple *sb; + struct sfi_mem_entry *mentry; + phys_size_t ram = 0; + u32 i; + + sb = sfi_search_mmap(); + if (!sb) + return 0; + + sfi_for_each_mentry(i, sb, mentry) { + if (mentry->type != SFI_MEM_CONV) + continue; + + ram += mentry->pages << 12; + } + + debug("sfi: RAM size %llu\n", ram); + return ram; +} + +unsigned install_e820_map(unsigned max_entries, struct e820entry *entries) +{ + return sfi_setup_e820(max_entries, entries); +} + +int dram_init_banksize(void) +{ + sfi_get_bank_size(); + return 0; +} + +int dram_init(void) +{ + gd->ram_size = sfi_get_ram_size(); + return 0; +} diff --git a/arch/x86/cpu/tangier/tangier.c b/arch/x86/cpu/tangier/tangier.c new file mode 100644 index 0000000000..20d6c6039b --- /dev/null +++ b/arch/x86/cpu/tangier/tangier.c @@ -0,0 +1,34 @@ +/* + * Copyright (c) 2017 Intel Corporation + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +/* + * Miscellaneous platform dependent initializations + */ +int arch_cpu_init(void) +{ + return x86_cpu_init_f(); +} + +int checkcpu(void) +{ + return 0; +} + +int print_cpuinfo(void) +{ + return default_print_cpuinfo(); +} + +void reset_cpu(ulong addr) +{ + scu_ipc_simple_command(IPCMSG_COLD_RESET, 0); +} diff --git a/arch/x86/include/asm/sfi.h b/arch/x86/include/asm/sfi.h index d6c44c978a..6c6ebeade8 100644 --- a/arch/x86/include/asm/sfi.h +++ b/arch/x86/include/asm/sfi.h @@ -60,6 +60,25 @@ struct __packed sfi_mem_entry { u64 attrib; }; +/* Memory type definitions */ +enum sfi_mem_type { + SFI_MEM_RESERVED, + SFI_LOADER_CODE, + SFI_LOADER_DATA, + SFI_BOOT_SERVICE_CODE, + SFI_BOOT_SERVICE_DATA, + SFI_RUNTIME_SERVICE_CODE, + SFI_RUNTIME_SERVICE_DATA, + SFI_MEM_CONV, + SFI_MEM_UNUSABLE, + SFI_ACPI_RECLAIM, + SFI_ACPI_NVS, + SFI_MEM_MMIO, + SFI_MEM_IOPORT, + SFI_PAL_CODE, + SFI_MEM_TYPEMAX, +}; + struct __packed sfi_cpu_table_entry { u32 apic_id; }; -- 2.39.5