return 0;
}
-/*
- * Get SDRAM type connected to EMIF.
- * Assuming similar SDRAM parts are connected to both EMIF's
- * which is typically the case. So it is sufficient to get
- * SDRAM type from EMIF1.
- */
-u32 emif_sdram_type()
-{
- struct emif_reg_struct *emif = (struct emif_reg_struct *)EMIF1_BASE;
-
- return (readl(&emif->emif_sdram_config) &
- EMIF_REG_SDRAM_TYPE_MASK) >> EMIF_REG_SDRAM_TYPE_SHIFT;
-}
-
static inline u32 get_mr(u32 base, u32 cs, u32 mr_addr)
{
u32 mr;
writel(regs->temp_alert_config, &emif->emif_temp_alert_config);
writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1_shdw);
- if ((omap_revision() >= OMAP5430_ES1_0) ||
- (omap_revision() == DRA752_ES1_0)) {
+ if ((omap_revision() >= OMAP5430_ES1_0) || is_dra7xx()) {
writel(EMIF_L3_CONFIG_VAL_SYS_10_MPU_5_LL_0,
&emif->emif_l3_config);
} else if (omap_revision() >= OMAP4460_ES1_0) {
}
}
-static void ddr3_leveling(u32 base, const struct emif_regs *regs)
+static void omap5_ddr3_leveling(u32 base, const struct emif_regs *regs)
{
struct emif_reg_struct *emif = (struct emif_reg_struct *)base;
/*
* Set invert_clkout (if activated)--DDR_PHYCTRL_1
- * Invert clock adds an additional half cycle delay on the command
- * interface. The additional half cycle, is usually meant to enable
- * leveling in the situation that DQS is later than CK on the board.It
- * also helps provide some additional margin for leveling.
+ * Invert clock adds an additional half cycle delay on the
+ * command interface. The additional half cycle, is usually
+ * meant to enable leveling in the situation that DQS is later
+ * than CK on the board.It also helps provide some additional
+ * margin for leveling.
*/
- writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1);
- writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1_shdw);
+ writel(regs->emif_ddr_phy_ctlr_1,
+ &emif->emif_ddr_phy_ctrl_1);
+
+ writel(regs->emif_ddr_phy_ctlr_1,
+ &emif->emif_ddr_phy_ctrl_1_shdw);
__udelay(130);
writel(((LP_MODE_DISABLE << EMIF_REG_LP_MODE_SHIFT)
- & EMIF_REG_LP_MODE_MASK), &emif->emif_pwr_mgmt_ctrl);
+ & EMIF_REG_LP_MODE_MASK), &emif->emif_pwr_mgmt_ctrl);
/* Launch Full leveling */
writel(DDR3_FULL_LVL, &emif->emif_rd_wr_lvl_ctl);
/* Wait till full leveling is complete */
readl(&emif->emif_rd_wr_lvl_ctl);
- __udelay(130);
+ __udelay(130);
/* Read data eye leveling no of samples */
config_data_eye_leveling_samples(base);
- /* Launch 8 incremental WR_LVL- to compensate for PHY limitation */
- writel(0x2 << EMIF_REG_WRLVLINC_INT_SHIFT, &emif->emif_rd_wr_lvl_ctl);
+ /*
+ * Launch 8 incremental WR_LVL- to compensate for
+ * PHY limitation.
+ */
+ writel(0x2 << EMIF_REG_WRLVLINC_INT_SHIFT,
+ &emif->emif_rd_wr_lvl_ctl);
+
__udelay(130);
/* Launch Incremental leveling */
writel(DDR3_INC_LVL, &emif->emif_rd_wr_lvl_ctl);
- __udelay(130);
+ __udelay(130);
}
-static void ddr3_sw_leveling(u32 base, const struct emif_regs *regs)
+static void update_hwleveling_output(u32 base, const struct emif_regs *regs)
{
struct emif_reg_struct *emif = (struct emif_reg_struct *)base;
+ u32 *emif_ext_phy_ctrl_reg, *emif_phy_status;
+ u32 reg, i;
+
+ emif_phy_status = (u32 *)&emif->emif_ddr_phy_status[7];
+ /* Update PHY_REG_RDDQS_RATIO */
+ emif_ext_phy_ctrl_reg = (u32 *)&emif->emif_ddr_ext_phy_ctrl_7;
+ for (i = 0; i < PHY_RDDQS_RATIO_REGS; i++) {
+ reg = readl(emif_phy_status++);
+ writel(reg, emif_ext_phy_ctrl_reg++);
+ writel(reg, emif_ext_phy_ctrl_reg++);
+ }
+
+ /* Update PHY_REG_FIFO_WE_SLAVE_RATIO */
+ emif_ext_phy_ctrl_reg = (u32 *)&emif->emif_ddr_ext_phy_ctrl_2;
+ for (i = 0; i < PHY_FIFO_WE_SLAVE_RATIO_REGS; i++) {
+ reg = readl(emif_phy_status++);
+ writel(reg, emif_ext_phy_ctrl_reg++);
+ writel(reg, emif_ext_phy_ctrl_reg++);
+ }
+
+ /* Update PHY_REG_WR_DQ/DQS_SLAVE_RATIO */
+ emif_ext_phy_ctrl_reg = (u32 *)&emif->emif_ddr_ext_phy_ctrl_12;
+ for (i = 0; i < PHY_REG_WR_DQ_SLAVE_RATIO_REGS; i++) {
+ reg = readl(emif_phy_status++);
+ writel(reg, emif_ext_phy_ctrl_reg++);
+ writel(reg, emif_ext_phy_ctrl_reg++);
+ }
+
+ /* Disable Leveling */
writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1);
writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1_shdw);
- config_data_eye_leveling_samples(base);
+ writel(0x0, &emif->emif_rd_wr_lvl_rmp_ctl);
+}
+
+static void dra7_ddr3_leveling(u32 base, const struct emif_regs *regs)
+{
+ struct emif_reg_struct *emif = (struct emif_reg_struct *)base;
+
+ /* Clear Error Status */
+ clrsetbits_le32(&emif->emif_ddr_ext_phy_ctrl_36,
+ EMIF_REG_PHY_FIFO_WE_IN_MISALINED_CLR,
+ EMIF_REG_PHY_FIFO_WE_IN_MISALINED_CLR);
+
+ clrsetbits_le32(&emif->emif_ddr_ext_phy_ctrl_36_shdw,
+ EMIF_REG_PHY_FIFO_WE_IN_MISALINED_CLR,
+ EMIF_REG_PHY_FIFO_WE_IN_MISALINED_CLR);
+
+ /* Disable refreshed before leveling */
+ clrsetbits_le32(&emif->emif_sdram_ref_ctrl, EMIF_REG_INITREF_DIS_MASK,
+ EMIF_REG_INITREF_DIS_MASK);
+
+ /* Start Full leveling */
+ writel(DDR3_FULL_LVL, &emif->emif_rd_wr_lvl_ctl);
+
+ __udelay(300);
+
+ /* Check for leveling timeout */
+ if (readl(&emif->emif_status) & EMIF_REG_LEVELING_TO_MASK) {
+ printf("Leveling timeout on EMIF%d\n", emif_num(base));
+ return;
+ }
+
+ /* Enable refreshes after leveling */
+ clrbits_le32(&emif->emif_sdram_ref_ctrl, EMIF_REG_INITREF_DIS_MASK);
+ debug("HW leveling success\n");
+ /*
+ * Update slave ratios in EXT_PHY_CTRLx registers
+ * as per HW leveling output
+ */
+ update_hwleveling_output(base, regs);
+}
+
+static void dra7_ddr3_init(u32 base, const struct emif_regs *regs)
+{
+ struct emif_reg_struct *emif = (struct emif_reg_struct *)base;
+
+ if (warm_reset())
+ emif_reset_phy(base);
+ do_ext_phy_settings(base, regs);
+
+ writel(regs->ref_ctrl | EMIF_REG_INITREF_DIS_MASK,
+ &emif->emif_sdram_ref_ctrl);
+ /* Update timing registers */
+ writel(regs->sdram_tim1, &emif->emif_sdram_tim_1);
+ writel(regs->sdram_tim2, &emif->emif_sdram_tim_2);
+ writel(regs->sdram_tim3, &emif->emif_sdram_tim_3);
+
+ writel(EMIF_L3_CONFIG_VAL_SYS_10_MPU_5_LL_0, &emif->emif_l3_config);
+ writel(regs->read_idle_ctrl, &emif->emif_read_idlectrl);
+ writel(regs->zq_config, &emif->emif_zq_config);
+ writel(regs->temp_alert_config, &emif->emif_temp_alert_config);
+ writel(regs->emif_rd_wr_lvl_rmp_ctl, &emif->emif_rd_wr_lvl_rmp_ctl);
writel(regs->emif_rd_wr_lvl_ctl, &emif->emif_rd_wr_lvl_ctl);
- writel(regs->sdram_config, &emif->emif_sdram_config);
+
+ writel(regs->emif_ddr_phy_ctlr_1_init, &emif->emif_ddr_phy_ctrl_1);
+ writel(regs->emif_rd_wr_exec_thresh, &emif->emif_rd_wr_exec_thresh);
+
+ writel(regs->ref_ctrl, &emif->emif_sdram_ref_ctrl);
+
+ writel(regs->sdram_config2, &emif->emif_lpddr2_nvm_config);
+ writel(regs->sdram_config_init, &emif->emif_sdram_config);
+
+ __udelay(1000);
+
+ writel(regs->ref_ctrl_final, &emif->emif_sdram_ref_ctrl);
+
+ if (regs->emif_rd_wr_lvl_rmp_ctl & EMIF_REG_RDWRLVL_EN_MASK)
+ dra7_ddr3_leveling(base, regs);
}
-static void ddr3_init(u32 base, const struct emif_regs *regs)
+static void omap5_ddr3_init(u32 base, const struct emif_regs *regs)
{
struct emif_reg_struct *emif = (struct emif_reg_struct *)base;
+ writel(regs->ref_ctrl, &emif->emif_sdram_ref_ctrl);
+ writel(regs->sdram_config_init, &emif->emif_sdram_config);
/*
* Set SDRAM_CONFIG and PHY control registers to locked frequency
* and RL =7. As the default values of the Mode Registers are not
* defined, contents of mode Registers must be fully initialized.
* H/W takes care of this initialization
*/
- writel(regs->sdram_config2, &emif->emif_lpddr2_nvm_config);
- writel(regs->sdram_config_init, &emif->emif_sdram_config);
-
writel(regs->emif_ddr_phy_ctlr_1_init, &emif->emif_ddr_phy_ctrl_1);
/* Update timing registers */
writel(regs->sdram_tim2, &emif->emif_sdram_tim_2);
writel(regs->sdram_tim3, &emif->emif_sdram_tim_3);
- writel(regs->ref_ctrl, &emif->emif_sdram_ref_ctrl);
writel(regs->read_idle_ctrl, &emif->emif_read_idlectrl);
+ writel(regs->sdram_config2, &emif->emif_lpddr2_nvm_config);
+ writel(regs->sdram_config_init, &emif->emif_sdram_config);
do_ext_phy_settings(base, regs);
- /* enable leveling */
writel(regs->emif_rd_wr_lvl_rmp_ctl, &emif->emif_rd_wr_lvl_rmp_ctl);
+ omap5_ddr3_leveling(base, regs);
+}
- if (omap_revision() == DRA752_ES1_0)
- ddr3_sw_leveling(base, regs);
+static void ddr3_init(u32 base, const struct emif_regs *regs)
+{
+ if (is_omap54xx())
+ omap5_ddr3_init(base, regs);
else
- ddr3_leveling(base, regs);
+ dra7_ddr3_init(base, regs);
}
#ifndef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS
* Changing the timing registers in EMIF can happen(going from one
* OPP to another)
*/
- if (!(in_sdram || warm_reset())) {
- if (emif_sdram_type() == EMIF_SDRAM_TYPE_LPDDR2)
+ if (!in_sdram && (!warm_reset() || is_dra7xx())) {
+ if (emif_sdram_type(regs->sdram_config) ==
+ EMIF_SDRAM_TYPE_LPDDR2)
lpddr2_init(base, regs);
else
ddr3_init(base, regs);
}
- if (warm_reset() && (emif_sdram_type() == EMIF_SDRAM_TYPE_DDR3)) {
+ if (warm_reset() && (emif_sdram_type(regs->sdram_config) ==
+ EMIF_SDRAM_TYPE_DDR3) && !is_dra7xx()) {
set_lpmode_selfrefresh(base);
emif_reset_phy(base);
- if (omap_revision() == DRA752_ES1_0)
- ddr3_sw_leveling(base, regs);
- else
- ddr3_leveling(base, regs);
+ omap5_ddr3_leveling(base, regs);
}
/* Write to the shadow registers */
emif1_enabled = 1;
emif2_enabled = 1;
break;
- } else if (valid == 1) {
+ }
+
+ if (valid == 1)
emif1_enabled = 1;
- } else if (valid == 2) {
+
+ if (valid == 2)
emif2_enabled = 1;
- }
}
+}
+
+static void do_bug0039_workaround(u32 base)
+{
+ u32 val, i, clkctrl;
+ struct emif_reg_struct *emif_base = (struct emif_reg_struct *)base;
+ const struct read_write_regs *bug_00339_regs;
+ u32 iterations;
+ u32 *phy_status_base = &emif_base->emif_ddr_phy_status[0];
+ u32 *phy_ctrl_base = &emif_base->emif_ddr_ext_phy_ctrl_1;
+
+ if (is_dra7xx())
+ phy_status_base++;
+ bug_00339_regs = get_bug_regs(&iterations);
+
+ /* Put EMIF in to idle */
+ clkctrl = __raw_readl((*prcm)->cm_memif_clkstctrl);
+ __raw_writel(0x0, (*prcm)->cm_memif_clkstctrl);
+
+ /* Copy the phy status registers in to phy ctrl shadow registers */
+ for (i = 0; i < iterations; i++) {
+ val = __raw_readl(phy_status_base +
+ bug_00339_regs[i].read_reg - 1);
+
+ __raw_writel(val, phy_ctrl_base +
+ ((bug_00339_regs[i].write_reg - 1) << 1));
+
+ __raw_writel(val, phy_ctrl_base +
+ (bug_00339_regs[i].write_reg << 1) - 1);
+ }
+
+ /* Disable leveling */
+ writel(0x0, &emif_base->emif_rd_wr_lvl_rmp_ctl);
+
+ __raw_writel(clkctrl, (*prcm)->cm_memif_clkstctrl);
}
/*
void sdram_init(void)
{
u32 in_sdram, size_prog, size_detect;
- u32 sdram_type = emif_sdram_type();
+ struct emif_reg_struct *emif = (struct emif_reg_struct *)EMIF1_BASE;
+ u32 sdram_type = emif_sdram_type(emif->emif_sdram_config);
debug(">>sdram_init()\n");
debug("get_ram_size() successful");
}
+ if (sdram_type == EMIF_SDRAM_TYPE_DDR3 &&
+ (!in_sdram && !warm_reset()) && (!is_dra7xx())) {
+ if (emif1_enabled)
+ do_bug0039_workaround(EMIF1_BASE);
+ if (emif2_enabled)
+ do_bug0039_workaround(EMIF2_BASE);
+ }
+
debug("<<sdram_init()\n");
}
projects / karo-tx-uboot.git / blobdiff