2 * Keystone2: DDR3 initialization
4 * (C) Copyright 2012-2014
5 * Texas Instruments Incorporated, <www.ti.com>
7 * SPDX-License-Identifier: GPL-2.0+
12 #include <asm/arch/msmc.h>
13 #include <asm/arch/ddr3.h>
14 #include <asm/arch/psc_defs.h>
16 #include <asm/ti-common/ti-edma3.h>
18 #define DDR3_EDMA_BLK_SIZE_SHIFT 10
19 #define DDR3_EDMA_BLK_SIZE (1 << DDR3_EDMA_BLK_SIZE_SHIFT)
20 #define DDR3_EDMA_BCNT 0x8000
21 #define DDR3_EDMA_CCNT 1
22 #define DDR3_EDMA_XF_SIZE (DDR3_EDMA_BLK_SIZE * DDR3_EDMA_BCNT)
23 #define DDR3_EDMA_SLOT_NUM 1
25 void ddr3_init_ddrphy(u32 base, struct ddr3_phy_config *phy_cfg)
29 while ((__raw_readl(base + KS2_DDRPHY_PGSR0_OFFSET)
30 & 0x00000001) != 0x00000001)
33 __raw_writel(phy_cfg->pllcr, base + KS2_DDRPHY_PLLCR_OFFSET);
35 tmp = __raw_readl(base + KS2_DDRPHY_PGCR1_OFFSET);
36 tmp &= ~(phy_cfg->pgcr1_mask);
37 tmp |= phy_cfg->pgcr1_val;
38 __raw_writel(tmp, base + KS2_DDRPHY_PGCR1_OFFSET);
40 __raw_writel(phy_cfg->ptr0, base + KS2_DDRPHY_PTR0_OFFSET);
41 __raw_writel(phy_cfg->ptr1, base + KS2_DDRPHY_PTR1_OFFSET);
42 __raw_writel(phy_cfg->ptr3, base + KS2_DDRPHY_PTR3_OFFSET);
43 __raw_writel(phy_cfg->ptr4, base + KS2_DDRPHY_PTR4_OFFSET);
45 tmp = __raw_readl(base + KS2_DDRPHY_DCR_OFFSET);
46 tmp &= ~(phy_cfg->dcr_mask);
47 tmp |= phy_cfg->dcr_val;
48 __raw_writel(tmp, base + KS2_DDRPHY_DCR_OFFSET);
50 __raw_writel(phy_cfg->dtpr0, base + KS2_DDRPHY_DTPR0_OFFSET);
51 __raw_writel(phy_cfg->dtpr1, base + KS2_DDRPHY_DTPR1_OFFSET);
52 __raw_writel(phy_cfg->dtpr2, base + KS2_DDRPHY_DTPR2_OFFSET);
53 __raw_writel(phy_cfg->mr0, base + KS2_DDRPHY_MR0_OFFSET);
54 __raw_writel(phy_cfg->mr1, base + KS2_DDRPHY_MR1_OFFSET);
56 __raw_writel(phy_cfg->mr2, base + KS2_DDRPHY_MR2_OFFSET);
57 __raw_writel(phy_cfg->dtcr, base + KS2_DDRPHY_DTCR_OFFSET);
58 __raw_writel(phy_cfg->pgcr2, base + KS2_DDRPHY_PGCR2_OFFSET);
60 __raw_writel(phy_cfg->zq0cr1, base + KS2_DDRPHY_ZQ0CR1_OFFSET);
61 __raw_writel(phy_cfg->zq1cr1, base + KS2_DDRPHY_ZQ1CR1_OFFSET);
62 __raw_writel(phy_cfg->zq2cr1, base + KS2_DDRPHY_ZQ2CR1_OFFSET);
64 __raw_writel(phy_cfg->pir_v1, base + KS2_DDRPHY_PIR_OFFSET);
65 while ((__raw_readl(base + KS2_DDRPHY_PGSR0_OFFSET) & 0x1) != 0x1)
68 /* Disable ECC for K2G */
70 clrbits_le32(base + KS2_DDRPHY_DATX8_4_OFFSET, 0x1);
71 clrbits_le32(base + KS2_DDRPHY_DATX8_5_OFFSET, 0x1);
72 clrbits_le32(base + KS2_DDRPHY_DATX8_6_OFFSET, 0x1);
73 clrbits_le32(base + KS2_DDRPHY_DATX8_7_OFFSET, 0x1);
74 clrbits_le32(base + KS2_DDRPHY_DATX8_8_OFFSET, 0x1);
77 __raw_writel(phy_cfg->pir_v2, base + KS2_DDRPHY_PIR_OFFSET);
78 while ((__raw_readl(base + KS2_DDRPHY_PGSR0_OFFSET) & 0x1) != 0x1)
82 void ddr3_init_ddremif(u32 base, struct ddr3_emif_config *emif_cfg)
84 __raw_writel(emif_cfg->sdcfg, base + KS2_DDR3_SDCFG_OFFSET);
85 __raw_writel(emif_cfg->sdtim1, base + KS2_DDR3_SDTIM1_OFFSET);
86 __raw_writel(emif_cfg->sdtim2, base + KS2_DDR3_SDTIM2_OFFSET);
87 __raw_writel(emif_cfg->sdtim3, base + KS2_DDR3_SDTIM3_OFFSET);
88 __raw_writel(emif_cfg->sdtim4, base + KS2_DDR3_SDTIM4_OFFSET);
89 __raw_writel(emif_cfg->zqcfg, base + KS2_DDR3_ZQCFG_OFFSET);
90 __raw_writel(emif_cfg->sdrfc, base + KS2_DDR3_SDRFC_OFFSET);
93 int ddr3_ecc_support_rmw(u32 base)
95 u32 value = __raw_readl(base + KS2_DDR3_MIDR_OFFSET);
97 /* Check the DDR3 controller ID reg if the controllers
98 supports ECC RMW or not */
99 if (value == 0x40461C02)
105 static void ddr3_ecc_config(u32 base, u32 value)
109 __raw_writel(value, base + KS2_DDR3_ECC_CTRL_OFFSET);
110 udelay(100000); /* delay required to synchronize across clock domains */
112 if (value & KS2_DDR3_ECC_EN) {
113 /* Clear the 1-bit error count */
114 data = __raw_readl(base + KS2_DDR3_ONE_BIT_ECC_ERR_CNT_OFFSET);
115 __raw_writel(data, base + KS2_DDR3_ONE_BIT_ECC_ERR_CNT_OFFSET);
117 /* enable the ECC interrupt */
118 __raw_writel(KS2_DDR3_1B_ECC_ERR_SYS | KS2_DDR3_2B_ECC_ERR_SYS |
119 KS2_DDR3_WR_ECC_ERR_SYS,
120 base + KS2_DDR3_ECC_INT_ENABLE_SET_SYS_OFFSET);
122 /* Clear the ECC error interrupt status */
123 __raw_writel(KS2_DDR3_1B_ECC_ERR_SYS | KS2_DDR3_2B_ECC_ERR_SYS |
124 KS2_DDR3_WR_ECC_ERR_SYS,
125 base + KS2_DDR3_ECC_INT_STATUS_OFFSET);
129 static void ddr3_reset_data(u32 base, u32 ddr3_size)
133 u32 seg, blks, dst, edma_blks;
134 struct edma3_slot_config slot;
135 struct edma3_channel_config edma_channel;
136 u32 edma_src[DDR3_EDMA_BLK_SIZE/4] __aligned(16) = {0, };
138 /* Setup an edma to copy the 1k block to the entire DDR */
139 puts("\nClear entire DDR3 memory to enable ECC\n");
141 /* save the SES MPAX regs */
142 msmc_get_ses_mpax(8, 0, mpax);
144 /* setup edma slot 1 configuration */
145 slot.opt = EDMA3_SLOPT_TRANS_COMP_INT_ENB |
146 EDMA3_SLOPT_COMP_CODE(0) |
147 EDMA3_SLOPT_STATIC | EDMA3_SLOPT_AB_SYNC;
148 slot.bcnt = DDR3_EDMA_BCNT;
149 slot.acnt = DDR3_EDMA_BLK_SIZE;
150 slot.ccnt = DDR3_EDMA_CCNT;
152 slot.dst_bidx = DDR3_EDMA_BLK_SIZE;
155 slot.link = EDMA3_PARSET_NULL_LINK;
157 edma3_slot_configure(KS2_EDMA0_BASE, DDR3_EDMA_SLOT_NUM, &slot);
159 /* configure quik edma channel */
160 edma_channel.slot = DDR3_EDMA_SLOT_NUM;
161 edma_channel.chnum = 0;
162 edma_channel.complete_code = 0;
163 /* event trigger after dst update */
164 edma_channel.trigger_slot_word = EDMA3_TWORD(dst);
165 qedma3_start(KS2_EDMA0_BASE, &edma_channel);
167 /* DDR3 size in segments (4KB seg size) */
168 seg_num = ddr3_size << (30 - KS2_MSMC_SEG_SIZE_SHIFT);
170 for (seg = 0; seg < seg_num; seg += KS2_MSMC_MAP_SEG_NUM) {
171 /* map 2GB 36-bit DDR address to 32-bit DDR address in EMIF
172 access slave interface so that edma driver can access */
173 msmc_map_ses_segment(8, 0, base >> KS2_MSMC_SEG_SIZE_SHIFT,
174 KS2_MSMC_DST_SEG_BASE + seg, MPAX_SEG_2G);
176 if ((seg_num - seg) > KS2_MSMC_MAP_SEG_NUM)
177 edma_blks = KS2_MSMC_MAP_SEG_NUM <<
178 (KS2_MSMC_SEG_SIZE_SHIFT
179 - DDR3_EDMA_BLK_SIZE_SHIFT);
181 edma_blks = (seg_num - seg) << (KS2_MSMC_SEG_SIZE_SHIFT
182 - DDR3_EDMA_BLK_SIZE_SHIFT);
184 /* Use edma driver to scrub 2GB DDR memory */
185 for (dst = base, blks = 0; blks < edma_blks;
186 blks += DDR3_EDMA_BCNT, dst += DDR3_EDMA_XF_SIZE) {
187 edma3_set_src_addr(KS2_EDMA0_BASE,
188 edma_channel.slot, (u32)edma_src);
189 edma3_set_dest_addr(KS2_EDMA0_BASE,
190 edma_channel.slot, (u32)dst);
192 while (edma3_check_for_transfer(KS2_EDMA0_BASE,
198 qedma3_stop(KS2_EDMA0_BASE, &edma_channel);
200 /* restore the SES MPAX regs */
201 msmc_set_ses_mpax(8, 0, mpax);
204 static void ddr3_ecc_init_range(u32 base)
206 u32 ecc_val = KS2_DDR3_ECC_EN;
207 u32 rmw = ddr3_ecc_support_rmw(base);
210 ecc_val |= KS2_DDR3_ECC_RMW_EN;
212 __raw_writel(0, base + KS2_DDR3_ECC_ADDR_RANGE1_OFFSET);
214 ddr3_ecc_config(base, ecc_val);
217 void ddr3_enable_ecc(u32 base, int test)
219 u32 ecc_val = KS2_DDR3_ECC_ENABLE;
220 u32 rmw = ddr3_ecc_support_rmw(base);
223 ecc_val |= KS2_DDR3_ECC_ADDR_RNG_1_EN;
227 /* by default, disable ecc when rmw = 0 and no
231 ecc_val |= KS2_DDR3_ECC_RMW_EN;
234 ddr3_ecc_config(base, ecc_val);
237 void ddr3_disable_ecc(u32 base)
239 ddr3_ecc_config(base, 0);
242 #if defined(CONFIG_SOC_K2HK) || defined(CONFIG_SOC_K2L)
243 static void cic_init(u32 base)
245 /* Disable CIC global interrupts */
246 __raw_writel(0, base + KS2_CIC_GLOBAL_ENABLE);
248 /* Set to normal mode, no nesting, no priority hold */
249 __raw_writel(0, base + KS2_CIC_CTRL);
250 __raw_writel(0, base + KS2_CIC_HOST_CTRL);
252 /* Enable CIC global interrupts */
253 __raw_writel(1, base + KS2_CIC_GLOBAL_ENABLE);
256 static void cic_map_cic_to_gic(u32 base, u32 chan_num, u32 irq_num)
258 /* Map the system interrupt to a CIC channel */
259 __raw_writeb(chan_num, base + KS2_CIC_CHAN_MAP(0) + irq_num);
261 /* Enable CIC system interrupt */
262 __raw_writel(irq_num, base + KS2_CIC_SYS_ENABLE_IDX_SET);
264 /* Enable CIC Host interrupt */
265 __raw_writel(chan_num, base + KS2_CIC_HOST_ENABLE_IDX_SET);
268 static void ddr3_map_ecc_cic2_irq(u32 base)
271 cic_map_cic_to_gic(base, KS2_CIC2_DDR3_ECC_CHAN_NUM,
272 KS2_CIC2_DDR3_ECC_IRQ_NUM);
276 void ddr3_init_ecc(u32 base, u32 ddr3_size)
278 if (!ddr3_ecc_support_rmw(base)) {
279 ddr3_disable_ecc(base);
283 ddr3_ecc_init_range(base);
284 ddr3_reset_data(CONFIG_SYS_SDRAM_BASE, ddr3_size);
286 /* mapping DDR3 ECC system interrupt from CIC2 to GIC */
287 #if defined(CONFIG_SOC_K2HK) || defined(CONFIG_SOC_K2L)
288 ddr3_map_ecc_cic2_irq(KS2_CIC2_BASE);
290 ddr3_enable_ecc(base, 0);
293 void ddr3_check_ecc_int(u32 base)
297 u32 value = __raw_readl(base + KS2_DDR3_ECC_INT_STATUS_OFFSET);
299 env = getenv("ecc_test");
301 ecc_test = simple_strtol(env, NULL, 0);
303 if (value & KS2_DDR3_WR_ECC_ERR_SYS)
304 puts("DDR3 ECC write error interrupted\n");
306 if (value & KS2_DDR3_2B_ECC_ERR_SYS) {
307 puts("DDR3 ECC 2-bit error interrupted\n");
310 puts("Reseting the device ...\n");
315 value = __raw_readl(base + KS2_DDR3_ONE_BIT_ECC_ERR_CNT_OFFSET);
317 printf("1-bit ECC err count: 0x%x\n", value);
318 value = __raw_readl(base +
319 KS2_DDR3_ONE_BIT_ECC_ERR_ADDR_LOG_OFFSET);
320 printf("1-bit ECC err address log: 0x%x\n", value);
324 void ddr3_reset_ddrphy(void)
328 /* Assert DDR3A PHY reset */
329 tmp = readl(KS2_DDR3APLLCTL1);
330 tmp |= KS2_DDR3_PLLCTRL_PHY_RESET;
331 writel(tmp, KS2_DDR3APLLCTL1);
333 /* wait 10us to catch the reset */
336 /* Release DDR3A PHY reset */
337 tmp = readl(KS2_DDR3APLLCTL1);
338 tmp &= ~KS2_DDR3_PLLCTRL_PHY_RESET;
339 __raw_writel(tmp, KS2_DDR3APLLCTL1);
342 #ifdef CONFIG_SOC_K2HK
344 * ddr3_reset_workaround - reset workaround in case if leveling error
345 * detected for PG 1.0 and 1.1 k2hk SoCs
347 void ddr3_err_reset_workaround(void)
354 * Check for PGSR0 error bits of DDR3 PHY.
355 * Check for WLERR, QSGERR, WLAERR,
356 * RDERR, WDERR, REERR, WEERR error to see if they are set or not
358 tmp_a = __raw_readl(KS2_DDR3A_DDRPHYC + KS2_DDRPHY_PGSR0_OFFSET);
359 tmp_b = __raw_readl(KS2_DDR3B_DDRPHYC + KS2_DDRPHY_PGSR0_OFFSET);
361 if (((tmp_a & 0x0FE00000) != 0) || ((tmp_b & 0x0FE00000) != 0)) {
362 printf("DDR Leveling Error Detected!\n");
363 printf("DDR3A PGSR0 = 0x%x\n", tmp_a);
364 printf("DDR3B PGSR0 = 0x%x\n", tmp_b);
367 * Write Keys to KICK registers to enable writes to registers
368 * in boot config space
370 __raw_writel(KS2_KICK0_MAGIC, KS2_KICK0);
371 __raw_writel(KS2_KICK1_MAGIC, KS2_KICK1);
374 * Move DDR3A Module out of reset isolation by setting
377 tmp_a = __raw_readl(KS2_PSC_BASE +
378 PSC_REG_MDCTL(KS2_LPSC_EMIF4F_DDR3A));
380 tmp_a = PSC_REG_MDCTL_SET_RESET_ISO(tmp_a, 0);
381 __raw_writel(tmp_a, KS2_PSC_BASE +
382 PSC_REG_MDCTL(KS2_LPSC_EMIF4F_DDR3A));
385 * Move DDR3B Module out of reset isolation by setting
388 tmp_b = __raw_readl(KS2_PSC_BASE +
389 PSC_REG_MDCTL(KS2_LPSC_EMIF4F_DDR3B));
390 tmp_b = PSC_REG_MDCTL_SET_RESET_ISO(tmp_b, 0);
391 __raw_writel(tmp_b, KS2_PSC_BASE +
392 PSC_REG_MDCTL(KS2_LPSC_EMIF4F_DDR3B));
395 * Write 0x5A69 Key to RSTCTRL[15:0] to unlock writes
396 * to RSTCTRL and RSTCFG
398 tmp = __raw_readl(KS2_RSTCTRL);
399 tmp &= KS2_RSTCTRL_MASK;
400 tmp |= KS2_RSTCTRL_KEY;
401 __raw_writel(tmp, KS2_RSTCTRL);
404 * Set PLL Controller to drive hard reset on SW trigger by
405 * setting RSTCFG[13] = 0
407 tmp = __raw_readl(KS2_RSTCTRL_RSCFG);
408 tmp &= ~KS2_RSTYPE_PLL_SOFT;
409 __raw_writel(tmp, KS2_RSTCTRL_RSCFG);