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-rw-r--r--arch/x86/cpu/Makefile1
-rw-r--r--arch/x86/cpu/braswell/Kconfig39
-rw-r--r--arch/x86/cpu/braswell/Makefile7
-rw-r--r--arch/x86/cpu/braswell/braswell.c36
-rw-r--r--arch/x86/cpu/braswell/cpu.c170
-rw-r--r--arch/x86/cpu/braswell/early_uart.c82
6 files changed, 335 insertions, 0 deletions
diff --git a/arch/x86/cpu/Makefile b/arch/x86/cpu/Makefile
index 999429e62b..94cdff18cc 100644
--- a/arch/x86/cpu/Makefile
+++ b/arch/x86/cpu/Makefile
@@ -27,6 +27,7 @@ endif
obj-y += intel_common/
obj-$(CONFIG_INTEL_BAYTRAIL) += baytrail/
+obj-$(CONFIG_INTEL_BRASWELL) += braswell/
obj-$(CONFIG_INTEL_BROADWELL) += broadwell/
obj-$(CONFIG_SYS_COREBOOT) += coreboot/
obj-$(CONFIG_EFI_APP) += efi/
diff --git a/arch/x86/cpu/braswell/Kconfig b/arch/x86/cpu/braswell/Kconfig
new file mode 100644
index 0000000000..0e214a7432
--- /dev/null
+++ b/arch/x86/cpu/braswell/Kconfig
@@ -0,0 +1,39 @@
+#
+# Copyright (C) 2017, Bin Meng <bmeng.cn@gmail.com>
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+config INTEL_BRASWELL
+ bool
+ select HAVE_FSP
+ select ARCH_MISC_INIT
+ select CPU_INTEL_TURBO_NOT_PACKAGE_SCOPED
+ imply HAVE_INTEL_ME
+ imply HAVE_VBT
+ imply ENABLE_MRC_CACHE
+ imply ENV_IS_IN_SPI_FLASH
+ imply AHCI_PCI
+ imply ICH_SPI
+ imply MMC
+ imply MMC_PCI
+ imply MMC_SDHCI
+ imply MMC_SDHCI_SDMA
+ imply SCSI
+ imply SPI_FLASH
+ imply SYS_NS16550
+ imply USB
+ imply USB_XHCI_HCD
+ imply VIDEO_FSP
+
+if INTEL_BRASWELL
+
+config FSP_ADDR
+ hex
+ default 0xfff20000
+
+config FSP_LOCKDOWN_SPI
+ bool
+ default y
+
+endif
diff --git a/arch/x86/cpu/braswell/Makefile b/arch/x86/cpu/braswell/Makefile
new file mode 100644
index 0000000000..19bcee61d7
--- /dev/null
+++ b/arch/x86/cpu/braswell/Makefile
@@ -0,0 +1,7 @@
+#
+# Copyright (C) 2017, Bin Meng <bmeng.cn@gmail.com>
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+obj-y += braswell.o cpu.o early_uart.o
diff --git a/arch/x86/cpu/braswell/braswell.c b/arch/x86/cpu/braswell/braswell.c
new file mode 100644
index 0000000000..37099aa3fd
--- /dev/null
+++ b/arch/x86/cpu/braswell/braswell.c
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2017, Bin Meng <bmeng.cn@gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/mrccache.h>
+#include <asm/post.h>
+
+int arch_cpu_init(void)
+{
+ post_code(POST_CPU_INIT);
+
+ return x86_cpu_init_f();
+}
+
+int arch_misc_init(void)
+{
+#ifdef CONFIG_ENABLE_MRC_CACHE
+ /*
+ * We intend not to check any return value here, as even MRC cache
+ * is not saved successfully, it is not a severe error that will
+ * prevent system from continuing to boot.
+ */
+ mrccache_save();
+#endif
+
+ return 0;
+}
+
+void reset_cpu(ulong addr)
+{
+ /* cold reset */
+ x86_full_reset();
+}
diff --git a/arch/x86/cpu/braswell/cpu.c b/arch/x86/cpu/braswell/cpu.c
new file mode 100644
index 0000000000..6ff9036597
--- /dev/null
+++ b/arch/x86/cpu/braswell/cpu.c
@@ -0,0 +1,170 @@
+/*
+ * Copyright (C) 2017, Bin Meng <bmeng.cn@gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ *
+ * Derived from arch/x86/cpu/baytrail/cpu.c
+ */
+
+#include <common.h>
+#include <cpu.h>
+#include <dm.h>
+#include <asm/cpu.h>
+#include <asm/cpu_x86.h>
+#include <asm/io.h>
+#include <asm/lapic.h>
+#include <asm/msr.h>
+#include <asm/turbo.h>
+
+static const unsigned int braswell_bus_freq_table[] = {
+ 83333333,
+ 100000000,
+ 133333333,
+ 116666666,
+ 80000000,
+ 93333333,
+ 90000000,
+ 88900000,
+ 87500000
+};
+
+static unsigned int braswell_bus_freq(void)
+{
+ msr_t clk_info = msr_read(MSR_BSEL_CR_OVERCLOCK_CONTROL);
+
+ if ((clk_info.lo & 0xf) < (ARRAY_SIZE(braswell_bus_freq_table)))
+ return braswell_bus_freq_table[clk_info.lo & 0xf];
+
+ return 0;
+}
+
+static unsigned long braswell_tsc_freq(void)
+{
+ msr_t platform_info;
+ ulong bclk = braswell_bus_freq();
+
+ if (!bclk)
+ return 0;
+
+ platform_info = msr_read(MSR_PLATFORM_INFO);
+
+ return bclk * ((platform_info.lo >> 8) & 0xff);
+}
+
+static int braswell_get_info(struct udevice *dev, struct cpu_info *info)
+{
+ info->cpu_freq = braswell_tsc_freq();
+ info->features = (1 << CPU_FEAT_L1_CACHE) | (1 << CPU_FEAT_MMU);
+
+ return 0;
+}
+
+static int braswell_get_count(struct udevice *dev)
+{
+ int ecx = 0;
+
+ /*
+ * Use the algorithm described in Intel 64 and IA-32 Architectures
+ * Software Developer's Manual Volume 3 (3A, 3B & 3C): System
+ * Programming Guide, Jan-2015. Section 8.9.2: Hierarchical Mapping
+ * of CPUID Extended Topology Leaf.
+ */
+ while (1) {
+ struct cpuid_result leaf_b;
+
+ leaf_b = cpuid_ext(0xb, ecx);
+
+ /*
+ * Braswell doesn't have hyperthreading so just determine the
+ * number of cores by from level type (ecx[15:8] == * 2)
+ */
+ if ((leaf_b.ecx & 0xff00) == 0x0200)
+ return leaf_b.ebx & 0xffff;
+
+ ecx++;
+ }
+
+ return 0;
+}
+
+static void braswell_set_max_freq(void)
+{
+ msr_t perf_ctl;
+ msr_t msr;
+
+ /* Enable speed step */
+ msr = msr_read(MSR_IA32_MISC_ENABLES);
+ msr.lo |= (1 << 16);
+ msr_write(MSR_IA32_MISC_ENABLES, msr);
+
+ /* Enable Burst Mode */
+ msr = msr_read(MSR_IA32_MISC_ENABLES);
+ msr.hi = 0;
+ msr_write(MSR_IA32_MISC_ENABLES, msr);
+
+ /*
+ * Set guaranteed ratio [21:16] from IACORE_TURBO_RATIOS to
+ * bits [15:8] of the PERF_CTL
+ */
+ msr = msr_read(MSR_IACORE_TURBO_RATIOS);
+ perf_ctl.lo = (msr.lo & 0x3f0000) >> 8;
+
+ /*
+ * Set guaranteed vid [22:16] from IACORE_TURBO_VIDS to
+ * bits [7:0] of the PERF_CTL
+ */
+ msr = msr_read(MSR_IACORE_TURBO_VIDS);
+ perf_ctl.lo |= (msr.lo & 0x7f0000) >> 16;
+
+ perf_ctl.hi = 0;
+ msr_write(MSR_IA32_PERF_CTL, perf_ctl);
+}
+
+static int braswell_probe(struct udevice *dev)
+{
+ debug("Init Braswell core\n");
+
+ /*
+ * On Braswell the turbo disable bit is actually scoped at the
+ * building-block level, not package. For non-BSP cores that are
+ * within a building block, enable turbo. The cores within the BSP's
+ * building block will just see it already enabled and move on.
+ */
+ if (lapicid())
+ turbo_enable();
+
+ /* Dynamic L2 shrink enable and threshold, clear SINGLE_PCTL bit 11 */
+ msr_clrsetbits_64(MSR_PMG_CST_CONFIG_CONTROL, 0x3f080f, 0xe0008),
+ msr_clrsetbits_64(MSR_POWER_MISC,
+ ENABLE_ULFM_AUTOCM_MASK | ENABLE_INDP_AUTOCM_MASK, 0);
+
+ /* Disable C1E */
+ msr_clrsetbits_64(MSR_POWER_CTL, 2, 0);
+ msr_setbits_64(MSR_POWER_MISC, 0x44);
+
+ /* Set this core to max frequency ratio */
+ braswell_set_max_freq();
+
+ return 0;
+}
+
+static const struct udevice_id braswell_ids[] = {
+ { .compatible = "intel,braswell-cpu" },
+ { }
+};
+
+static const struct cpu_ops braswell_ops = {
+ .get_desc = cpu_x86_get_desc,
+ .get_info = braswell_get_info,
+ .get_count = braswell_get_count,
+ .get_vendor = cpu_x86_get_vendor,
+};
+
+U_BOOT_DRIVER(cpu_x86_braswell_drv) = {
+ .name = "cpu_x86_braswell",
+ .id = UCLASS_CPU,
+ .of_match = braswell_ids,
+ .bind = cpu_x86_bind,
+ .probe = braswell_probe,
+ .ops = &braswell_ops,
+};
diff --git a/arch/x86/cpu/braswell/early_uart.c b/arch/x86/cpu/braswell/early_uart.c
new file mode 100644
index 0000000000..c70a8854fd
--- /dev/null
+++ b/arch/x86/cpu/braswell/early_uart.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2017, Bin Meng <bmeng.cn@gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+
+#define PCI_DEV_CONFIG(segbus, dev, fn) ( \
+ (((segbus) & 0xfff) << 20) | \
+ (((dev) & 0x1f) << 15) | \
+ (((fn) & 0x07) << 12))
+
+/* Platform Controller Unit */
+#define LPC_DEV 0x1f
+#define LPC_FUNC 0
+
+/* Enable UART */
+#define UART_CONT 0x80
+
+/* UART PAD definitions */
+#define UART_RXD_COMMUITY 1
+#define UART_TXD_COMMUITY 1
+#define UART_RXD_FAMILY 4
+#define UART_TXD_FAMILY 4
+#define UART_RXD_PAD 2
+#define UART_TXD_PAD 7
+#define UART_RXD_FUNC 3
+#define UART_TXD_FUNC 3
+
+/* IO Memory */
+#define IO_BASE_ADDRESS 0xfed80000
+
+static inline uint32_t gpio_pconf0(int community, int family, int pad)
+{
+ return IO_BASE_ADDRESS + community * 0x8000 + 0x4400 +
+ family * 0x400 + pad * 8;
+}
+
+static void gpio_select_func(int community, int family, int pad, int func)
+{
+ uint32_t pconf0_addr = gpio_pconf0(community, family, pad);
+
+ clrsetbits_le32(pconf0_addr, 0xf << 16, func << 16);
+}
+
+static void x86_pci_write_config32(int dev, unsigned int where, u32 value)
+{
+ unsigned long addr;
+
+ addr = CONFIG_PCIE_ECAM_BASE | dev | (where & ~3);
+ writel(value, addr);
+}
+
+/* This can be called after memory-mapped PCI is working */
+int setup_internal_uart(int enable)
+{
+ /* Enable or disable the legacy UART hardware */
+ x86_pci_write_config32(PCI_DEV_CONFIG(0, LPC_DEV, LPC_FUNC), UART_CONT,
+ enable);
+
+ /* All done for the disable part, so just return */
+ if (!enable)
+ return 0;
+
+ /*
+ * Set up the pads to the UART function. This allows the signals to
+ * leave the chip
+ */
+ gpio_select_func(UART_RXD_COMMUITY, UART_RXD_FAMILY,
+ UART_RXD_PAD, UART_RXD_FUNC);
+ gpio_select_func(UART_TXD_COMMUITY, UART_TXD_FAMILY,
+ UART_TXD_PAD, UART_TXD_FUNC);
+
+ return 0;
+}
+
+void board_debug_uart_init(void)
+{
+ setup_internal_uart(1);
+}
generated by cgit (git 2.34.1) at 2025-01-28 14:47:23 +0000