x86: broadwell: Add support for SDRAM setup

Broadwell uses a binary blob called the memory reference code (MRC) to start
up its SDRAM. This is similar to ivybridge so we can mostly use common code
for running this blob.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Bin Meng <bmeng.cn@gmail.com>

2 files changed, 201 insertions, 0 deletions

diff --git a/arch/x86/include/asm/arch-broadwell/pei_data.h b/arch/x86/include/asm/arch-broadwell/pei_data.h
new file mode 100644
index 0000000000..b2cc8b8dc4
--- /dev/null
+++ b/arch/x86/include/asm/arch-broadwell/pei_data.h
@@ -0,0 +1,177 @@
+/*
+ * From Coreboot soc/intel/broadwell/include/soc/pei_data.h
+ *
+ * Copyright (C) 2014 Google Inc.
+ *
+ * SPDX-License-Identifier:	BSD-3-Clause
+ */
+
+#ifndef ASM_ARCH_PEI_DATA_H
+#define ASM_ARCH_PEI_DATA_H
+
+#include <linux/linkage.h>
+
+#define PEI_VERSION 22
+
+typedef void asmlinkage (*tx_byte_func)(unsigned char byte);
+
+enum board_type {
+	BOARD_TYPE_CRB_MOBILE = 0,	/* CRB Mobile */
+	BOARD_TYPE_CRB_DESKTOP,		/* CRB Desktop */
+	BOARD_TYPE_USER1,		/* SV mobile */
+	BOARD_TYPE_USER2,		/* SV desktop */
+	BOARD_TYPE_USER3,		/* SV server */
+	BOARD_TYPE_ULT,			/* ULT */
+	BOARD_TYPE_CRB_EMBDEDDED,	/* CRB Embedded */
+	BOARD_TYPE_UNKNOWN,
+};
+
+#define MAX_USB2_PORTS 14
+#define MAX_USB3_PORTS 6
+#define USB_OC_PIN_SKIP 8
+
+enum usb2_port_location {
+	USB_PORT_BACK_PANEL = 0,
+	USB_PORT_FRONT_PANEL,
+	USB_PORT_DOCK,
+	USB_PORT_MINI_PCIE,
+	USB_PORT_FLEX,
+	USB_PORT_INTERNAL,
+	USB_PORT_SKIP,
+	USB_PORT_NGFF_DEVICE_DOWN,
+};
+
+struct usb2_port_setting {
+	/*
+	 * Usb Port Length:
+	 * [16:4] = length in inches in octal format
+	 * [3:0]  = decimal point
+	 */
+	uint16_t length;
+	uint8_t enable;
+	uint8_t oc_pin;
+	uint8_t location;
+} __packed;
+
+struct usb3_port_setting {
+	uint8_t enable;
+	uint8_t oc_pin;
+	/*
+	 * Set to 0 if trace length is > 5 inches
+	 * Set to 1 if trace length is <= 5 inches
+	 */
+	uint8_t fixed_eq;
+} __packed;
+
+
+struct pei_data {
+	uint32_t pei_version;
+
+	enum board_type board_type;
+	int boot_mode;
+	int ec_present;
+	int usbdebug;
+
+	/* Base addresses */
+	uint32_t pciexbar;
+	uint16_t smbusbar;
+	uint32_t xhcibar;
+	uint32_t ehcibar;
+	uint32_t gttbar;
+	uint32_t rcba;
+	uint32_t pmbase;
+	uint32_t gpiobase;
+	uint32_t temp_mmio_base;
+	uint32_t tseg_size;
+
+	/*
+	 * 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;
+	/* Set to 0 for memory down */
+	uint8_t spd_addresses[4];
+	/* Enable 2x Refresh Mode */
+	int ddr_refresh_2x;
+	/* DQ pins are interleaved on board */
+	int dq_pins_interleaved;
+	/* Limit DDR3 frequency */
+	int max_ddr3_freq;
+	/* Disable self refresh */
+	int disable_self_refresh;
+	/* Disable cmd power/CKEPD */
+	int disable_cmd_pwr;
+
+	/* USB port configuration */
+	struct usb2_port_setting usb2_ports[MAX_USB2_PORTS];
+	struct usb3_port_setting usb3_ports[MAX_USB3_PORTS];
+
+	/*
+	 * USB3 board specific PHY tuning
+	 */
+
+	/* Valid range: 0x69 - 0x80 */
+	uint8_t usb3_txout_volt_dn_amp_adj[MAX_USB3_PORTS];
+	/* Valid range: 0x80 - 0x9c */
+	uint8_t usb3_txout_imp_sc_volt_amp_adj[MAX_USB3_PORTS];
+	/* Valid range: 0x39 - 0x80 */
+	uint8_t usb3_txout_de_emp_adj[MAX_USB3_PORTS];
+	/* Valid range: 0x3d - 0x4a */
+	uint8_t usb3_txout_imp_adj_volt_amp[MAX_USB3_PORTS];
+
+	/* Console output function */
+	tx_byte_func tx_byte;
+
+	/*
+	 * DIMM SPD data for memory down configurations
+	 * [CHANNEL][SLOT][SPD]
+	 */
+	uint8_t spd_data[2][2][512];
+
+	/*
+	 * LPDDR3 DQ byte map
+	 * [CHANNEL][ITERATION][2]
+	 *
+	 * Maps which PI clocks are used by what LPDDR DQ Bytes (from CPU side)
+	 * DQByteMap[0] - ClkDQByteMap:
+	 * - If clock is per rank, program to [0xFF, 0xFF]
+	 * - If clock is shared by 2 ranks, program to [0xFF, 0] or [0, 0xFF]
+	 * - If clock is shared by 2 ranks but does not go to all bytes,
+	 *   Entry[i] defines which DQ bytes Group i services
+	 * DQByteMap[1] - CmdNDQByteMap: [0] is CmdN/CAA and [1] is CmdN/CAB
+	 * DQByteMap[2] - CmdSDQByteMap: [0] is CmdS/CAA and [1] is CmdS/CAB
+	 * DQByteMap[3] - CkeDQByteMap : [0] is CKE /CAA and [1] is CKE /CAB
+	 *                For DDR, DQByteMap[3:1] = [0xFF, 0]
+	 * DQByteMap[4] - CtlDQByteMap : Always program to [0xFF, 0]
+	 *                since we have 1 CTL / rank
+	 * DQByteMap[5] - CmdVDQByteMap: Always program to [0xFF, 0]
+	 *                since we have 1 CA Vref
+	 */
+	uint8_t dq_map[2][6][2];
+
+	/*
+	 * LPDDR3 Map from CPU DQS pins to SDRAM DQS pins
+	 * [CHANNEL][MAX_BYTES]
+	 */
+	uint8_t dqs_map[2][8];
+
+	/* Data read from flash and passed into MRC */
+	const void *saved_data;
+	int saved_data_size;
+
+	/* Disable use of saved data (can be set by mainboard) */
+	int disable_saved_data;
+
+	/* Data from MRC that should be saved to flash */
+	void *data_to_save;
+	int data_to_save_size;
+	struct pei_memory_info meminfo;
+} __packed;
+
+void mainboard_fill_pei_data(struct pei_data *pei_data);
+void broadwell_fill_pei_data(struct pei_data *pei_data);
+
+#endif
diff --git a/arch/x86/include/asm/global_data.h b/arch/x86/include/asm/global_data.h
index 0ca518ca38..3bc2ac24cf 100644
--- a/arch/x86/include/asm/global_data.h
+++ b/arch/x86/include/asm/global_data.h
@@ -19,6 +19,29 @@ enum pei_boot_mode_t {
 
 };
 
+struct dimm_info {
+	uint32_t dimm_size;
+	uint16_t ddr_type;
+	uint16_t ddr_frequency;
+	uint8_t rank_per_dimm;
+	uint8_t channel_num;
+	uint8_t dimm_num;
+	uint8_t bank_locator;
+	/* The 5th byte is '\0' for the end of string */
+	uint8_t serial[5];
+	/* The 19th byte is '\0' for the end of string */
+	uint8_t module_part_number[19];
+	uint16_t mod_id;
+	uint8_t mod_type;
+	uint8_t bus_width;
+} __packed;
+
+struct pei_memory_info {
+	uint8_t dimm_cnt;
+	/* Maximum num of dimm is 8 */
+	struct dimm_info dimm[8];
+} __packed;
+
 struct memory_area {
 	uint64_t start;
 	uint64_t size;
@@ -59,6 +82,7 @@ struct arch_global_data {
 	enum pei_boot_mode_t pei_boot_mode;
 	const struct pch_gpio_map *gpio_map;	/* board GPIO map */
 	struct memory_info meminfo;	/* Memory information */
+	struct pei_memory_info pei_meminfo;	/* PEI memory information */
 #ifdef CONFIG_HAVE_FSP
 	void *hob_list;			/* FSP HOB list */
 #endif