rockchip: rk3399: add sdram driver

Add the sdram driver for rk3399. With this patch we can boot
into depthcharge.

This patch also include a config file for lpddr3-hynix-4GB
that generated bases on its datasheet.

Please refer to TRM V0.3 Part1 Chapter 9 for DMC.

BRANCH=none
BUG=chrome-os-partner:51537
TEST=boot to depthcharge on kevin

Change-Id: I2afcaa3b68dbad77a5fe677b835289b675ed2bef
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 5d777e29942057fb7237eefa34051d1f54b19405
Original-Change-Id: Ifa1fe98a7058869518757d50678a64620610d91d
Original-Signed-off-by: Lin Huang <hl@rock-chips.com>
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/332562
Reviewed-on: https://review.coreboot.org/14716
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

2 files changed, 172 insertions, 0 deletions

diff --git a/src/soc/rockchip/rk3399/include/soc/addressmap.h b/src/soc/rockchip/rk3399/include/soc/addressmap.h
index 30bb46495a..8c1dacc08c 100644
--- a/src/soc/rockchip/rk3399/include/soc/addressmap.h
+++ b/src/soc/rockchip/rk3399/include/soc/addressmap.h
@@ -58,6 +58,11 @@
 #define SARADC_BASE		0xff100000
 #define RK_PWM_BASE		0xff420000
 
+#define DDRC0_BASE_ADDR		0xffa80000
+#define SERVER_MSCH0_BASE_ADDR	0xffa84000
+#define DDRC1_BASE_ADDR		0xffa88000
+#define SERVER_MSCH1_BASE_ADDR	0xffa8c000
+
 #define IC_BASES  { I2C0_BASE, I2C1_BASE, I2C2_BASE, I2C3_BASE,		\
 			I2C4_BASE, I2C5_BASE, I2C6_BASE, I2C7_BASE, I2C8_BASE }
 
diff --git a/src/soc/rockchip/rk3399/include/soc/sdram.h b/src/soc/rockchip/rk3399/include/soc/sdram.h
index fb5d8cd319..5c7273bcc1 100644
--- a/src/soc/rockchip/rk3399/include/soc/sdram.h
+++ b/src/soc/rockchip/rk3399/include/soc/sdram.h
@@ -18,6 +18,173 @@
 
 #include <stddef.h>
 
+enum {
+	DDR3 = 3,
+	LPDDR2 = 5,
+	LPDDR3 = 6,
+	LPDDR4 = 7,
+	UNUSED = 0xFF
+};
+
+struct rk3399_ddr_pctl_regs {
+	u32 denali_ctl[332];
+};
+
+struct rk3399_ddr_publ_regs {
+	u32 denali_phy[959];
+};
+
+struct rk3399_ddr_pi_regs {
+	u32 denali_pi[200];
+};
+union noc_ddrtiminga0 {
+	u32 d32;
+	struct {
+		unsigned acttoact : 6;
+		unsigned reserved0 : 2;
+		unsigned rdtomiss : 6;
+		unsigned reserved1 : 2;
+		unsigned wrtomiss : 6;
+		unsigned reserved2 : 2;
+		unsigned readlatency : 8;
+	} b;
+};
+
+union noc_ddrtimingb0 {
+	u32 d32;
+	struct {
+		unsigned rdtowr : 5;
+		unsigned reserved0 : 3;
+		unsigned wrtord : 5;
+		unsigned reserved1 : 3;
+		unsigned rrd : 4;
+		unsigned reserved2 : 4;
+		unsigned faw : 6;
+		unsigned reserved3 : 2;
+	} b;
+};
+
+union noc_ddrtimingc0 {
+	u32 d32;
+	struct {
+		unsigned burstpenalty : 4;
+		unsigned reserved0 : 4;
+		unsigned wrtomwr : 6;
+		unsigned reserved1 : 18;
+	} b;
+};
+
+union noc_devtodev0 {
+	u32 d32;
+	struct {
+		unsigned busrdtord : 3;
+		unsigned reserved0 : 1;
+		unsigned busrdtowr : 3;
+		unsigned reserved1 : 1;
+		unsigned buswrtord : 3;
+		unsigned reserved2 : 1;
+		unsigned buswrtowr : 3;
+		unsigned reserved3 : 17;
+	} b;
+};
+
+union noc_ddrmode {
+	u32 d32;
+	struct {
+		unsigned autoprecharge : 1;
+		unsigned bypassfiltering : 1;
+		unsigned fawbank : 1;
+		unsigned burstsize : 2;
+		unsigned mwrsize : 2;
+		unsigned reserved2 : 1;
+		unsigned forceorder : 8;
+		unsigned forceorderstate : 8;
+		unsigned reserved3 : 8;
+	} b;
+};
+
+struct rk3399_msch_regs {
+	u32 coreid;
+	u32 revisionid;
+	u32 ddrconf;
+	u32 ddrsize;
+	union noc_ddrtiminga0 ddrtiminga0;
+	union noc_ddrtimingb0 ddrtimingb0;
+	union noc_ddrtimingc0 ddrtimingc0;
+	union noc_devtodev0 devtodev0;
+	u32 reserved0[(0x110-0x20)/4];
+	union noc_ddrmode ddrmode;
+	u32 reserved1[(0x1000-0x114)/4];
+	u32 agingx0;
+};
+
+struct rk3399_msch_timings {
+	union noc_ddrtiminga0 ddrtiminga0;
+	union noc_ddrtimingb0 ddrtimingb0;
+	union noc_ddrtimingc0 ddrtimingc0;
+	union noc_devtodev0 devtodev0;
+	union noc_ddrmode ddrmode;
+	u32 agingx0;
+};
+
+/* DENALI_CTL_00 */
+#define START		(1)
+
+/* DENALI_CTL_68 */
+#define PWRUP_SREFRESH_EXIT	(1 << 16)
+
+/* DENALI_CTL_274 */
+#define MEM_RST_VALID	(1)
+
+struct rk3399_sdram_channel {
+	unsigned char rank;
+	/* col = 0, means this channel is invalid */
+	unsigned char col;
+	/* 3:8bank, 2:4bank */
+	unsigned char bk;
+	/* channel buswidth, 2:32bit, 1:16bit, 0:8bit */
+	unsigned char bw;
+	/* die buswidth, 2:32bit, 1:16bit, 0:8bit */
+	unsigned char dbw;
+	/* row_3_4 = 1: 6Gb or 12Gb die
+	 * row_3_4 = 0: normal die, power of 2
+	 */
+	unsigned char row_3_4;
+	unsigned char cs0_row;
+	unsigned char cs1_row;
+	unsigned int ddrconfig;
+	struct rk3399_msch_timings noc_timings;
+};
+
+struct rk3399_sdram_params {
+	struct rk3399_sdram_channel ch[2];
+	unsigned int ddr_freq;
+	unsigned char dramtype;
+	unsigned char num_channels;
+	unsigned char stride;
+	unsigned char odt;
+	/* align 8 byte */
+	struct rk3399_ddr_pctl_regs pctl_regs;
+	/* align 8 byte */
+	struct rk3399_ddr_pi_regs pi_regs;
+	/* align 8 byte */
+	struct rk3399_ddr_publ_regs phy_regs;
+	/* used for align 8byte for next struct */
+	unsigned int align_8;
+};
+
+#define PI_CA_TRAINING	(1 << 0)
+#define PI_WRITE_LEVELING	(1 << 1)
+#define PI_READ_GATE_TRAINING	(1 << 2)
+#define PI_READ_LEVELING	(1 << 3)
+#define PI_WDQ_LEVELING	(1 << 4)
+#define PI_FULL_TARINING	(0xff)
+
+void sdram_init(const struct rk3399_sdram_params *sdram_params);
+u32 sdram_get_ram_code(void);
+const struct rk3399_sdram_params *get_sdram_config(void);
+const struct rk3399_sdram_params
+		*get_default_sdram_config(unsigned char dramtype);
 size_t sdram_size_mb(void);
 
 #endif