armv7: Move Exynos from 'cpu' to 'soc'.

The Exynos family and most ARM products are SoC, not just CPU.

We used to put ARM code in src/cpu to avoid polluting the code base for what was
essentially an experiment at the time. Now that it's past the experimental phase
and we're going to see more SoCs (including intel/baytrail) in coreboot.

Change-Id: I5ea1f822664244edf5f77087bc8018d7c535f81c
Reviewed-on: https://chromium-review.googlesource.com/170891
Tested-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Ronald Minnich <rminnich@chromium.org>
Commit-Queue: Hung-Te Lin <hungte@chromium.org>
(cherry picked from commit c8bb8fe0b20be37465f93c738d80e7e43033670a)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6739
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

1 files changed, 353 insertions, 0 deletions

diff --git a/src/soc/samsung/exynos5250/dmc.h b/src/soc/samsung/exynos5250/dmc.h
new file mode 100644
index 0000000000..6388316c5e
--- /dev/null
+++ b/src/soc/samsung/exynos5250/dmc.h
@@ -0,0 +1,353 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef CPU_SAMSUNG_EXYNOS5250_DMC_H
+#define CPU_SAMSUNG_EXYNOS5250_DMC_H
+
+#ifndef __ASSEMBLER__
+
+#include "cpu.h"
+
+struct exynos5_dmc {
+	unsigned int concontrol;
+	unsigned int memcontrol;
+	unsigned int memconfig0;
+	unsigned int memconfig1;
+	unsigned int directcmd;
+	unsigned int prechconfig;
+	unsigned int phycontrol0;
+	unsigned char res1[0xc];
+	unsigned int pwrdnconfig;
+	unsigned int timingpzq;
+	unsigned int timingref;
+	unsigned int timingrow;
+	unsigned int timingdata;
+	unsigned int timingpower;
+	unsigned int phystatus;
+	unsigned char res2[0x4];
+	unsigned int chipstatus_ch0;
+	unsigned int chipstatus_ch1;
+	unsigned char res3[0x4];
+	unsigned int mrstatus;
+	unsigned char res4[0x8];
+	unsigned int qoscontrol0;
+	unsigned char resr5[0x4];
+	unsigned int qoscontrol1;
+	unsigned char res6[0x4];
+	unsigned int qoscontrol2;
+	unsigned char res7[0x4];
+	unsigned int qoscontrol3;
+	unsigned char res8[0x4];
+	unsigned int qoscontrol4;
+	unsigned char res9[0x4];
+	unsigned int qoscontrol5;
+	unsigned char res10[0x4];
+	unsigned int qoscontrol6;
+	unsigned char res11[0x4];
+	unsigned int qoscontrol7;
+	unsigned char res12[0x4];
+	unsigned int qoscontrol8;
+	unsigned char res13[0x4];
+	unsigned int qoscontrol9;
+	unsigned char res14[0x4];
+	unsigned int qoscontrol10;
+	unsigned char res15[0x4];
+	unsigned int qoscontrol11;
+	unsigned char res16[0x4];
+	unsigned int qoscontrol12;
+	unsigned char res17[0x4];
+	unsigned int qoscontrol13;
+	unsigned char res18[0x4];
+	unsigned int qoscontrol14;
+	unsigned char res19[0x4];
+	unsigned int qoscontrol15;
+	unsigned char res20[0x14];
+	unsigned int ivcontrol;
+	unsigned int wrtra_config;
+	unsigned int rdlvl_config;
+	unsigned char res21[0x8];
+	unsigned int brbrsvconfig;
+	unsigned int brbqosconfig;
+	unsigned int membaseconfig0;
+	unsigned int membaseconfig1;
+	unsigned char res22[0xc];
+	unsigned int wrlvl_config;
+	unsigned char res23[0xc];
+	unsigned int perevcontrol;
+	unsigned int perev0config;
+	unsigned int perev1config;
+	unsigned int perev2config;
+	unsigned int perev3config;
+	unsigned char res24[0xdebc];
+	unsigned int pmnc_ppc_a;
+	unsigned char res25[0xc];
+	unsigned int cntens_ppc_a;
+	unsigned char res26[0xc];
+	unsigned int cntenc_ppc_a;
+	unsigned char res27[0xc];
+	unsigned int intens_ppc_a;
+	unsigned char res28[0xc];
+	unsigned int intenc_ppc_a;
+	unsigned char res29[0xc];
+	unsigned int flag_ppc_a;
+	unsigned char res30[0xac];
+	unsigned int ccnt_ppc_a;
+	unsigned char res31[0xc];
+	unsigned int pmcnt0_ppc_a;
+	unsigned char res32[0xc];
+	unsigned int pmcnt1_ppc_a;
+	unsigned char res33[0xc];
+	unsigned int pmcnt2_ppc_a;
+	unsigned char res34[0xc];
+	unsigned int pmcnt3_ppc_a;
+};
+
+static struct exynos5_dmc * const exynos_dmc = (void *)EXYNOS5_DMC_CTRL_BASE;
+
+struct exynos5_phy_control {
+	unsigned int phy_con0;
+	unsigned int phy_con1;
+	unsigned int phy_con2;
+	unsigned int phy_con3;
+	unsigned int phy_con4;
+	unsigned char res1[4];
+	unsigned int phy_con6;
+	unsigned char res2[4];
+	unsigned int phy_con8;
+	unsigned int phy_con9;
+	unsigned int phy_con10;
+	unsigned char res3[4];
+	unsigned int phy_con12;
+	unsigned int phy_con13;
+	unsigned int phy_con14;
+	unsigned int phy_con15;
+	unsigned int phy_con16;
+	unsigned char res4[4];
+	unsigned int phy_con17;
+	unsigned int phy_con18;
+	unsigned int phy_con19;
+	unsigned int phy_con20;
+	unsigned int phy_con21;
+	unsigned int phy_con22;
+	unsigned int phy_con23;
+	unsigned int phy_con24;
+	unsigned int phy_con25;
+	unsigned int phy_con26;
+	unsigned int phy_con27;
+	unsigned int phy_con28;
+	unsigned int phy_con29;
+	unsigned int phy_con30;
+	unsigned int phy_con31;
+	unsigned int phy_con32;
+	unsigned int phy_con33;
+	unsigned int phy_con34;
+	unsigned int phy_con35;
+	unsigned int phy_con36;
+	unsigned int phy_con37;
+	unsigned int phy_con38;
+	unsigned int phy_con39;
+	unsigned int phy_con40;
+	unsigned int phy_con41;
+	unsigned int phy_con42;
+};
+
+static struct exynos5_phy_control * const exynos_phy0_control =
+		(void *)EXYNOS5_DMC_PHY0_BASE;
+static struct exynos5_phy_control * const exynos_phy1_control =
+		(void *)EXYNOS5_DMC_PHY1_BASE;
+
+enum ddr_mode {
+	DDR_MODE_DDR2,
+	DDR_MODE_DDR3,
+	DDR_MODE_LPDDR2,
+	DDR_MODE_LPDDR3,
+
+	DDR_MODE_COUNT,
+};
+
+/* For reasons unknown, people are in the habit of taking a 32-bit
+ * field with 2 possible values and packing it with, say, 2 bits. A
+ * non-robust encoding, using only 2 bits of a 32-bit field, is
+ * incredibly difficult to deal with when things go wrong, because
+ * there are a lot of things that get expressed as 0, 1, or 2. If
+ * you're scanning with jtag or dumping memory it is really hard to
+ * tell when you've hit the beginning of the struct. So, let's be a
+ * bit smart here. First, while it's common to let the enum count
+ * entries for you, when there are two of them, we can do the
+ * counting. And, let's set the values to something we can easily scan
+ * for in memory. Since '1' and '2' are rather common, we pick
+ * something that's actually of some value when things go wrong.  This
+ * setup motivated by a use case: something's going wrong and having a
+ * manuf name of '1' or '2' is completely useless!
+ */
+enum mem_manuf {
+	MEM_MANUF_AUTODETECT,
+	MEM_MANUF_ELPIDA = 0xe7b1da,
+	MEM_MANUF_SAMSUNG = 0x5a5096,
+
+	MEM_MANUF_COUNT = 2, // fancy that.
+};
+
+enum {
+	MEM_TIMINGS_MSR_COUNT	= 4,
+};
+
+#define DMC_INTERLEAVE_SIZE		0x1f
+
+/* CONCONTROL register fields */
+#define CONCONTROL_DFI_INIT_START_SHIFT	28
+#define CONCONTROL_RD_FETCH_SHIFT	12
+#define CONCONTROL_RD_FETCH_MASK	(0x7 << CONCONTROL_RD_FETCH_SHIFT)
+#define CONCONTROL_AREF_EN_SHIFT	5
+
+/* PRECHCONFIG register field */
+#define PRECHCONFIG_TP_CNT_SHIFT	24
+
+/* PWRDNCONFIG register field */
+#define PWRDNCONFIG_DPWRDN_CYC_SHIFT	0
+#define PWRDNCONFIG_DSREF_CYC_SHIFT	16
+
+/* PHY_CON0 register fields */
+#define PHY_CON0_T_WRRDCMD_SHIFT	17
+#define PHY_CON0_T_WRRDCMD_MASK		(0x7 << PHY_CON0_T_WRRDCMD_SHIFT)
+#define PHY_CON0_CTRL_DDR_MODE_SHIFT	11
+
+/* PHY_CON1 register fields */
+#define PHY_CON1_RDLVL_RDDATA_ADJ_SHIFT	0
+
+/* PHY_CON12 register fields */
+#define PHY_CON12_CTRL_START_POINT_SHIFT	24
+#define PHY_CON12_CTRL_INC_SHIFT	16
+#define PHY_CON12_CTRL_FORCE_SHIFT	8
+#define PHY_CON12_CTRL_START_SHIFT	6
+#define PHY_CON12_CTRL_START_MASK	(1 << PHY_CON12_CTRL_START_SHIFT)
+#define PHY_CON12_CTRL_DLL_ON_SHIFT	5
+#define PHY_CON12_CTRL_DLL_ON_MASK	(1 << PHY_CON12_CTRL_DLL_ON_SHIFT)
+#define PHY_CON12_CTRL_REF_SHIFT	1
+
+/* PHY_CON16 register fields */
+#define PHY_CON16_ZQ_MODE_DDS_SHIFT	24
+#define PHY_CON16_ZQ_MODE_DDS_MASK	(0x7 << PHY_CON16_ZQ_MODE_DDS_SHIFT)
+
+#define PHY_CON16_ZQ_MODE_TERM_SHIFT 21
+#define PHY_CON16_ZQ_MODE_TERM_MASK	(0x7 << PHY_CON16_ZQ_MODE_TERM_SHIFT)
+
+#define PHY_CON16_ZQ_MODE_NOTERM_MASK	(1 << 19)
+
+/* PHY_CON42 register fields */
+#define PHY_CON42_CTRL_BSTLEN_SHIFT	8
+#define PHY_CON42_CTRL_BSTLEN_MASK	(0xff << PHY_CON42_CTRL_BSTLEN_SHIFT)
+
+#define PHY_CON42_CTRL_RDLAT_SHIFT	0
+#define PHY_CON42_CTRL_RDLAT_MASK	(0x1f << PHY_CON42_CTRL_RDLAT_SHIFT)
+
+/* These are the memory timings for a particular memory type and speed */
+struct mem_timings {
+	enum mem_manuf mem_manuf;	/* Memory manufacturer */
+	enum ddr_mode mem_type;		/* Memory type */
+	unsigned int frequency_mhz;	/* Frequency of memory in MHz */
+
+	/* Here follow the timing parameters for the selected memory */
+	uint8_t apll_mdiv;
+	uint8_t apll_pdiv;
+	uint8_t apll_sdiv;
+	uint8_t mpll_mdiv;
+	uint8_t mpll_pdiv;
+	uint8_t mpll_sdiv;
+	uint8_t cpll_mdiv;
+	uint8_t cpll_pdiv;
+	uint8_t cpll_sdiv;
+	uint8_t gpll_pdiv;
+	uint16_t gpll_mdiv;
+	uint8_t gpll_sdiv;
+	uint8_t epll_mdiv;
+	uint8_t epll_pdiv;
+	uint8_t epll_sdiv;
+	uint8_t vpll_mdiv;
+	uint8_t vpll_pdiv;
+	uint8_t vpll_sdiv;
+	uint8_t bpll_mdiv;
+	uint8_t bpll_pdiv;
+	uint8_t bpll_sdiv;
+	uint8_t use_bpll;       /* 1 to use BPLL for cdrex, 0 to use MPLL */
+	uint8_t pclk_cdrex_ratio;
+	unsigned int direct_cmd_msr[MEM_TIMINGS_MSR_COUNT];
+
+	unsigned int timing_ref;
+	unsigned int timing_row;
+	unsigned int timing_data;
+	unsigned int timing_power;
+
+	/* DQS, DQ, DEBUG offsets */
+	unsigned int phy0_dqs;
+	unsigned int phy1_dqs;
+	unsigned int phy0_dq;
+	unsigned int phy1_dq;
+	uint8_t phy0_tFS;
+	uint8_t phy1_tFS;
+	uint8_t phy0_pulld_dqs;
+	uint8_t phy1_pulld_dqs;
+
+	uint8_t lpddr3_ctrl_phy_reset;
+	uint8_t ctrl_start_point;
+	uint8_t ctrl_inc;
+	uint8_t ctrl_start;
+	uint8_t ctrl_dll_on;
+	uint8_t ctrl_ref;
+
+	uint8_t ctrl_force;
+	uint8_t ctrl_rdlat;
+	uint8_t ctrl_bstlen;
+
+	uint8_t fp_resync;
+	uint8_t iv_size;
+	uint8_t dfi_init_start;
+	uint8_t aref_en;
+
+	uint8_t rd_fetch;
+
+	uint8_t zq_mode_dds;
+	uint8_t zq_mode_term;
+	uint8_t zq_mode_noterm;	/* 1 to allow termination disable */
+
+	unsigned int memcontrol;
+	unsigned int memconfig;
+
+	unsigned int membaseconfig0;
+	unsigned int membaseconfig1;
+	unsigned int prechconfig_tp_cnt;
+	unsigned int dpwrdn_cyc;
+	unsigned int dsref_cyc;
+	unsigned int concontrol;
+	/* Channel and Chip Selection */
+	uint8_t dmc_channels;		/* number of memory channels */
+	uint8_t chips_per_channel;	/* number of chips per channel */
+	uint8_t chips_to_configure;	/* number of chips to configure */
+	uint8_t send_zq_init;		/* 1 to send this command */
+	unsigned int impedance;		/* drive strength impedance */
+	uint8_t gate_leveling_enable;	/* check gate leveling is enabled */
+};
+
+/**
+ * Get the correct memory timings for our selected memory type and speed.
+ *
+ * @return pointer to the memory timings that we should use
+ */
+struct mem_timings *get_mem_timings(void);
+
+#endif
+#endif