soc/mediatek/mt8192: Do dramc init settings

Signed-off-by: Huayang Duan <huayang.duan@mediatek.com>
Change-Id: Ie4877b69de1bfa4ff981d8eb386efbddb9e0f5c2
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44700
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>

5 files changed, 239 insertions, 1 deletions

diff --git a/src/soc/mediatek/mt8192/Makefile.inc b/src/soc/mediatek/mt8192/Makefile.inc
index cf09b3cf65..1f70e4318e 100644
--- a/src/soc/mediatek/mt8192/Makefile.inc
+++ b/src/soc/mediatek/mt8192/Makefile.inc
@@ -25,6 +25,7 @@ verstage-y += ../common/uart.c
 
 romstage-y += ../common/auxadc.c
 romstage-y += ../common/cbmem.c
+romstage-y += dramc_pi_main.c dramc_pi_basic_api.c dramc_utility.c
 romstage-y += emi.c
 romstage-y += flash_controller.c
 romstage-y += ../common/gpio.c gpio.c
diff --git a/src/soc/mediatek/mt8192/dramc_pi_basic_api.c b/src/soc/mediatek/mt8192/dramc_pi_basic_api.c
new file mode 100644
index 0000000000..aacb1ef3fd
--- /dev/null
+++ b/src/soc/mediatek/mt8192/dramc_pi_basic_api.c
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <soc/dramc_pi_api.h>
+
+void global_option_init(struct ddr_cali *cali)
+{
+}
+
+void dfs_init_for_calibration(const struct ddr_cali *cali)
+{
+}
diff --git a/src/soc/mediatek/mt8192/dramc_pi_main.c b/src/soc/mediatek/mt8192/dramc_pi_main.c
new file mode 100644
index 0000000000..a2a4dea1c4
--- /dev/null
+++ b/src/soc/mediatek/mt8192/dramc_pi_main.c
@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <soc/dramc_pi_api.h>
+#include <soc/dramc_register.h>
+#include <soc/regulator.h>
+
+static void set_vcore_voltage(const struct ddr_cali *cali)
+{
+	u32 vcore = get_vcore_value(cali);
+
+	dramc_info("Set DRAM vcore voltage to %u\n", vcore);
+	mainboard_set_regulator_vol(MTK_REGULATOR_VCORE, vcore);
+}
+
+static void dramc_calibration_all_channels(struct ddr_cali *cali)
+{
+}
+
+void init_dram(const struct dramc_data *dparam)
+{
+	u32 bc_bak;
+	u8 k_shuffle, k_shuffle_end;
+	u8 pll_mode = 0;
+	bool first_freq_k = true;
+
+	struct ddr_cali cali = {0};
+	struct mr_values mr_value;
+	const struct ddr_base_info *ddr_info = &dparam->ddr_info;
+
+	cali.pll_mode = &pll_mode;
+	cali.mr_value = &mr_value;
+	cali.support_ranks = ddr_info->support_ranks;
+	cali.cbt_mode[RANK_0] = ddr_info->cbt_mode[RANK_0];
+	cali.cbt_mode[RANK_1] = ddr_info->cbt_mode[RANK_1];
+	cali.emi_config = &ddr_info->emi_config;
+
+	dramc_set_broadcast(DRAMC_BROADCAST_ON);
+
+	global_option_init(&cali);
+	bc_bak = dramc_get_broadcast();
+	dramc_set_broadcast(DRAMC_BROADCAST_OFF);
+	dramc_set_broadcast(bc_bak);
+
+	if (ddr_info->config_dvfs == DRAMC_ENABLE_DVFS)
+		k_shuffle_end = CALI_SEQ_MAX;
+	else
+		k_shuffle_end = CALI_SEQ1;
+
+	for (k_shuffle = CALI_SEQ0; k_shuffle < k_shuffle_end; k_shuffle++) {
+		set_cali_datas(&cali, dparam, k_shuffle);
+		set_vcore_voltage(&cali);
+		dfs_init_for_calibration(&cali);
+
+		dramc_calibration_all_channels(&cali);
+
+		first_freq_k = false;
+	}
+}
diff --git a/src/soc/mediatek/mt8192/dramc_utility.c b/src/soc/mediatek/mt8192/dramc_utility.c
new file mode 100644
index 0000000000..71a7eb6920
--- /dev/null
+++ b/src/soc/mediatek/mt8192/dramc_utility.c
@@ -0,0 +1,167 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <soc/dramc_pi_api.h>
+#include <soc/dramc_register.h>
+#include <soc/infracfg.h>
+
+struct dfs_frequency_table {
+	u32 frequency;
+	dram_freq_grp freq_group;
+	dram_div_mode div_mode;
+	dram_dfs_shu shuffle_saved;
+	vref_cali_mode vref_cali;
+	u32 vcore;
+};
+
+static const struct dfs_frequency_table freq_shuffle_table[DRAM_DFS_SHU_MAX] = {
+	[CALI_SEQ0] = {800, DDRFREQ_800, DIV8_MODE, DRAM_DFS_SHU4, VREF_CALI_ON, 650000},
+	[CALI_SEQ1] = {1200, DDRFREQ_1200, DIV8_MODE, DRAM_DFS_SHU2, VREF_CALI_ON, 662500},
+	[CALI_SEQ2] = {600, DDRFREQ_600, DIV8_MODE, DRAM_DFS_SHU5, VREF_CALI_OFF, 650000},
+	[CALI_SEQ3] = {933, DDRFREQ_933, DIV8_MODE, DRAM_DFS_SHU3, VREF_CALI_OFF, 662500},
+	[CALI_SEQ4] = {400, DDRFREQ_400, DIV4_MODE, DRAM_DFS_SHU6, VREF_CALI_OFF, 650000},
+	[CALI_SEQ5] = {2133, DDRFREQ_2133, DIV8_MODE, DRAM_DFS_SHU0, VREF_CALI_ON, 725000},
+	[CALI_SEQ6] = {1600, DDRFREQ_1600, DIV8_MODE, DRAM_DFS_SHU1, VREF_CALI_OFF, 687500},
+};
+
+void dramc_set_broadcast(u32 onoff)
+{
+	write32(&mt8192_infracfg->dramc_wbr, onoff);
+}
+
+u32 dramc_get_broadcast(void)
+{
+	return read32(&mt8192_infracfg->dramc_wbr);
+}
+
+u8 get_fsp(const struct ddr_cali *cali)
+{
+	return cali->fsp;
+}
+
+dram_div_mode get_div_mode(const struct ddr_cali *cali)
+{
+	return cali->div_mode;
+}
+
+dram_freq_grp get_freq_group(const struct ddr_cali *cali)
+{
+	return cali->freq_group;
+}
+
+dbi_mode get_write_dbi(const struct ddr_cali *cali)
+{
+	return cali->w_dbi[get_fsp(cali)];
+}
+
+dram_odt_state get_odt_state(const struct ddr_cali *cali)
+{
+	return cali->odt_onoff;
+}
+
+dram_dfs_shu get_shu(const struct ddr_cali *cali)
+{
+	return cali->shu;
+}
+
+dram_cbt_mode get_cbt_mode(const struct ddr_cali *cali)
+{
+	return cali->cbt_mode[cali->rank];
+}
+
+u32 get_vcore_value(const struct ddr_cali *cali)
+{
+	return cali->vcore_voltage;
+}
+
+u32 get_frequency(const struct ddr_cali *cali)
+{
+	return cali->frequency;
+}
+
+vref_cali_mode get_vref_cali(const struct ddr_cali *cali)
+{
+	return cali->vref_cali;
+}
+
+dram_pinmux_type get_pinmux_type(const struct ddr_cali *cali)
+{
+	return cali->pinmux_type;
+}
+
+u8 get_mck2ui_div_shift(const struct ddr_cali *cali)
+{
+	if (get_div_mode(cali) == DIV4_MODE)
+		return 2;
+	else
+		return 3;
+}
+
+dram_dfs_shu get_shu_save_by_k_shu(dram_cali_seq k_shu)
+{
+	return freq_shuffle_table[k_shu].shuffle_saved;
+}
+
+dram_freq_grp get_freq_group_by_shu_save(dram_dfs_shu shu)
+{
+	for (u8 k_shu = CALI_SEQ0; k_shu < CALI_SEQ_MAX; k_shu++)
+		if (freq_shuffle_table[k_shu].shuffle_saved == shu)
+			return freq_shuffle_table[k_shu].freq_group;
+
+	dramc_err("Invalid shuffle: %d\n", shu);
+	return DDRFREQ_800;
+}
+
+u32 get_frequency_by_shu(dram_dfs_shu shu)
+{
+	for (u8 k_shu = CALI_SEQ0; k_shu < CALI_SEQ_MAX; k_shu++)
+		if (freq_shuffle_table[k_shu].shuffle_saved == shu)
+			return freq_shuffle_table[k_shu].frequency;
+
+	dramc_err("Invalid shuffle: %d, using k_shu = %d\n", shu, CALI_SEQ0);
+	return freq_shuffle_table[CALI_SEQ0].frequency;
+}
+
+dram_freq_grp get_highest_freq_group(void)
+{
+	dram_freq_grp highest_freq = DDRFREQ_800;
+
+	for (u8 k_shu = CALI_SEQ0; k_shu < CALI_SEQ_MAX; k_shu++)
+		if (freq_shuffle_table[k_shu].freq_group > highest_freq)
+			highest_freq = freq_shuffle_table[k_shu].freq_group;
+
+	dramc_dbg("Highest freq is: %d\n", highest_freq);
+	return highest_freq;
+}
+
+void set_cali_datas(struct ddr_cali *cali, const struct dramc_data *dparam, dram_cali_seq k_shu)
+{
+	const struct dfs_frequency_table *shuffle = &freq_shuffle_table[k_shu];
+
+	cali->chn = CHANNEL_A;
+	cali->rank = RANK_0;
+	cali->fsp = (shuffle->freq_group < DDRFREQ_1600) ? FSP_0 : FSP_1;
+	cali->w_dbi[FSP_0] = DBI_OFF;
+	cali->w_dbi[FSP_1] = DBI_ON;
+	cali->frequency = shuffle->frequency;
+	cali->freq_group = shuffle->freq_group;
+	cali->div_mode = shuffle->div_mode;
+	cali->shu = shuffle->shuffle_saved;
+	cali->vref_cali = shuffle->vref_cali;
+	cali->vcore_voltage = shuffle->vcore;
+	cali->odt_onoff = (cali->fsp == FSP_0) ? ODT_OFF : ODT_ON;
+	cali->params = &dparam->freq_params[cali->shu];
+
+	dramc_dbg("cali data (size: %ld) fsp: %d, freq_group: %d, div_mode: %d, "
+		  "shu: %d, vref_cali: %d, odt_onoff: %d, vcore: %d\n",
+		  sizeof(*cali), cali->fsp, cali->freq_group, cali->div_mode, cali->shu,
+		  cali->vref_cali, cali->odt_onoff, cali->vcore_voltage);
+}
+
+void dramc_auto_refresh_switch(u8 chn, bool enable)
+{
+	SET32_BITFIELDS(&ch[chn].ao.refctrl0, REFCTRL0_REFDIS, enable ? 0 : 1);
+
+	if (!enable)
+		udelay(READ32_BITFIELD(&ch[chn].nao.misc_statusa,
+		       MISC_STATUSA_REFRESH_QUEUE_CNT));
+}
diff --git a/src/soc/mediatek/mt8192/emi.c b/src/soc/mediatek/mt8192/emi.c
index 9e48918f66..f83acd36bc 100644
--- a/src/soc/mediatek/mt8192/emi.c
+++ b/src/soc/mediatek/mt8192/emi.c
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
-#include <soc/emi.h>
+#include <soc/dramc_pi_api.h>
 
 size_t sdram_size(void)
 {
@@ -11,4 +11,5 @@ size_t sdram_size(void)
 
 void mt_set_emi(const struct dramc_data *dparam)
 {
+	init_dram(dparam);
 }