Add a RAM driver for the MPC83xx architecture.
Signed-off-by: Mario Six <mario.six(a)gdsys.cc>
---
v1 -> v2:
No changes
---
arch/powerpc/cpu/mpc83xx/spd_sdram.c | 4 +
drivers/ram/Kconfig | 8 +
drivers/ram/Makefile | 1 +
drivers/ram/mpc83xx_sdram.c | 948 +++++++++++++++++++++++++++++
include/dt-bindings/memory/mpc83xx-sdram.h | 143 +++++
include/mpc83xx.h | 6 +
6 files changed, 1110 insertions(+)
create mode 100644 drivers/ram/mpc83xx_sdram.c
create mode 100644 include/dt-bindings/memory/mpc83xx-sdram.h
diff --git a/arch/powerpc/cpu/mpc83xx/spd_sdram.c b/arch/powerpc/cpu/mpc83xx/spd_sdram.c
index 21ab0153fc..f1e2dbf7c4 100644
--- a/arch/powerpc/cpu/mpc83xx/spd_sdram.c
+++ b/arch/powerpc/cpu/mpc83xx/spd_sdram.c
@@ -11,6 +11,8 @@
* SPDX-License-Identifier: GPL-2.0+
*/
+#ifndef CONFIG_MPC83XX_SDRAM
+
#include <common.h>
#include <asm/processor.h>
#include <asm/io.h>
@@ -925,3 +927,5 @@ void ddr_enable_ecc(unsigned int dram_size)
__asm__ __volatile__ ("isync");
}
#endif /* CONFIG_DDR_ECC */
+
+#endif /* !CONFIG_MPC83XX_SDRAM */
diff --git a/drivers/ram/Kconfig b/drivers/ram/Kconfig
index 496e2b793b..18532e71be 100644
--- a/drivers/ram/Kconfig
+++ b/drivers/ram/Kconfig
@@ -34,4 +34,12 @@ config STM32_SDRAM
support external memories like sdram, psram & nand.
This driver is for the sdram memory interface with the FMC.
+config MPC83XX_SDRAM
+ bool "Enable MPC83XX SDRAM support"
+ depends on RAM
+ help
+ Enable support for the internal DDR Memory Controller of the MPC83xx
+ family of SoCs. Both static configurations, as well as configuring
+ the RAM through the use of SPD is supported via device tree settings.
+
source "drivers/ram/stm32mp1/Kconfig"
diff --git a/drivers/ram/Makefile b/drivers/ram/Makefile
index 3820d03aa4..4ad3604d16 100644
--- a/drivers/ram/Makefile
+++ b/drivers/ram/Makefile
@@ -5,6 +5,7 @@
# SPDX-License-Identifier: GPL-2.0+
#
obj-$(CONFIG_RAM) += ram-uclass.o
+obj-$(CONFIG_MPC83XX_SDRAM) += mpc83xx_sdram.o
obj-$(CONFIG_SANDBOX) += sandbox_ram.o
obj-$(CONFIG_STM32MP1_DDR) += stm32mp1/
obj-$(CONFIG_STM32_SDRAM) += stm32_sdram.o
diff --git a/drivers/ram/mpc83xx_sdram.c b/drivers/ram/mpc83xx_sdram.c
new file mode 100644
index 0000000000..1a73f7b3da
--- /dev/null
+++ b/drivers/ram/mpc83xx_sdram.c
@@ -0,0 +1,948 @@
+#define DEBUG
+
+#include <common.h>
+#include <dm.h>
+#include <ram.h>
+#include <asm/io.h>
+#include <dt-bindings/memory/mpc83xx-sdram.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define CSCONFIG_ENABLE 0x80000000
+
+#define BANK_BITS_2 0x00000000
+#define BANK_BITS_3 0x00004000
+
+#define ROW_BITS_12 0x00000000
+#define ROW_BITS_13 0x00000100
+#define ROW_BITS_14 0x00000200
+
+#define COL_BITS_8 0x00000000
+#define COL_BITS_9 0x00000001
+#define COL_BITS_10 0x00000002
+#define COL_BITS_11 0x00000003
+
+#define TIMING_CFG3_EXT_REFREC_SHIFT 16
+
+#define TIMING_CFG0_RWT_SHIFT 30
+#define TIMING_CFG0_WRT_SHIFT 28
+#define TIMING_CFG0_RRT_SHIFT 26
+#define TIMING_CFG0_WWT_SHIFT 24
+#define TIMING_CFG0_ACT_PD_EXIT_SHIFT 20
+#define TIMING_CFG0_PRE_PD_EXIT_SHIFT 16
+#define TIMING_CFG0_ODT_PD_EXIT_SHIFT 8
+#define TIMING_CFG0_MRS_CYC_SHIFT 0
+
+#define TIMING_CFG1_PRETOACT_SHIFT 28
+#define TIMING_CFG1_ACTTOPRE_SHIFT 24
+#define TIMING_CFG1_ACTTORW_SHIFT 20
+#define TIMING_CFG1_CASLAT_SHIFT 16
+#define TIMING_CFG1_REFREC_SHIFT 12
+#define TIMING_CFG1_WRREC_SHIFT 8
+#define TIMING_CFG1_ACTTOACT_SHIFT 4
+#define TIMING_CFG1_WRTORD_SHIFT 0
+
+#define TIMING_CFG2_CPO_SHIFT 23
+#define TIMING_CFG2_WR_DATA_DELAY_SHIFT 10
+#define TIMING_CFG2_ADD_LAT_SHIFT 28
+#define TIMING_CFG2_WR_LAT_DELAY_SHIFT 19
+#define TIMING_CFG2_RD_TO_PRE_SHIFT 13
+#define TIMING_CFG2_CKE_PLS_SHIFT 6
+#define TIMING_CFG2_FOUR_ACT_SHIFT 0
+
+#define SDRAM_CFG_SREN_SHIFT (31 - 1)
+#define SDRAM_CFG_ECC_EN_SHIFT (31 - 2)
+#define SDRAM_CFG_RD_EN_SHIFT (31 - 3)
+#define SDRAM_CFG_SDRAM_TYPE_SHIFT (31 - 7)
+#define SDRAM_CFG_DYN_PWR_SHIFT (31 - 10)
+#define SDRAM_CFG_DBW_SHIFT (31 - 12)
+#define SDRAM_CFG_NCAP_SHIFT (31 - 14)
+#define SDRAM_CFG_2T_EN_SHIFT (31 - 16)
+#define SDRAM_CFG_BA_INTLV_CTL_SHIFT (31 - 23)
+#define SDRAM_CFG_PCHB8_SHIFT (31 - 27)
+#define SDRAM_CFG_HSE_SHIFT (31 - 28)
+#define SDRAM_CFG_BI_SHIFT (31 - 31)
+
+#define SDRAM_CFG2_FRC_SR_SHIFT (31 - 0)
+#define SDRAM_CFG2_DLL_RST_DIS (31 - 2)
+#define SDRAM_CFG2_DQS_CFG (31 - 5)
+#define SDRAM_CFG2_ODT_CFG (31 - 10)
+#define SDRAM_CFG2_NUM_PR (31 - 19)
+
+#define SDRAM_MODE_ESD_SHIFT 16
+#define SDRAM_MODE_SD_SHIFT 0
+
+#define SDRAM_MODE2_ESD2_SHIFT (31 - 15)
+#define SDRAM_MODE2_ESD3_SHIFT (31 - 31)
+
+#define SDRAM_INTERVAL_REFINT_SHIFT 16
+#define SDRAM_INTERVAL_BSTOPRE_SHIFT 0
+
+#define SDRAM_CFG_MEM_EN 0x80000000
+
+int dram_init(void)
+{
+ struct udevice *ram_ctrl;
+ int ret;
+
+ /* Current assumption: There is only one RAM controller */
+ ret = uclass_first_device_err(UCLASS_RAM, &ram_ctrl);
+
+ if (ret) {
+ debug("uclass_first_device_err failed: %d\n", ret);
+ return ret;
+ }
+
+ /* Set gd->ram_size? */
+
+ return 0;
+}
+
+phys_size_t get_effective_memsize(void)
+{
+#ifndef CONFIG_VERY_BIG_RAM
+ return gd->ram_size;
+#else
+ /* limit stack to what we can reasonable map */
+ return ((gd->ram_size > CONFIG_MAX_MEM_MAPPED) ?
+ CONFIG_MAX_MEM_MAPPED : gd->ram_size);
+#endif
+}
+
+struct mpc83xx_sdram_priv {
+ ulong total_size;
+};
+
+int mpc83xx_sdram_static_init(ofnode node, u32 cs, u32 mapaddr, u32 size)
+{
+ immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
+ u32 msize = size;
+ u32 msize_log2 = __ilog2(msize);
+ u32 auto_precharge, odt_rd_cfg, odt_wr_cfg, bank_bits, row_bits,
+ col_bits;
+ u32 bank_bits_mask, row_bits_mask, col_bits_mask;
+
+ /* Configure the DDR local access window */
+ out_be32(&im->sysconf.ddrlaw[cs].bar, mapaddr & 0xfffff000);
+ out_be32(&im->sysconf.ddrlaw[cs].ar, LBLAWAR_EN | (msize_log2 - 1));
+
+ out_be32(&im->ddr.csbnds[cs].csbnds, (msize - 1) >> 24);
+
+ auto_precharge = ofnode_read_u32_default(node, "auto_precharge", 0);
+ switch (auto_precharge) {
+ case AUTO_PRECHARGE_ENABLE:
+ case AUTO_PRECHARGE_DISABLE:
+ break;
+ default:
+ debug("auto_precharge value invalid.\n");
+ return -EINVAL;
+ }
+
+ odt_rd_cfg = ofnode_read_u32_default(node, "odt_rd_cfg", 0);
+ switch (odt_rd_cfg) {
+#if defined(CONFIG_MPC830x) || defined(CONFIG_MPC831x) || \
+ defined(CONFIG_MPC8360) || defined(CONFIG_MPC837x)
+ case ODT_RD_NEVER:
+ case ODT_RD_ONLY_CURRENT:
+ case ODT_RD_ONLY_OTHER_CS:
+#if defined(CONFIG_MPC8360) || defined(CONFIG_MPC837x)
+ case ODT_RD_ONLY_OTHER_DIMM:
+#endif
+#endif
+ /* MPC832x only knows this value */
+ case ODT_RD_ALL:
+ break;
+ default:
+ debug("odt_rd_cfg value invalid.\n");
+ return -EINVAL;
+ }
+
+ odt_wr_cfg = ofnode_read_u32_default(node, "odt_wr_cfg", 0);
+ switch (odt_wr_cfg) {
+#if defined(CONFIG_MPC830x) || defined(CONFIG_MPC831x) || \
+ defined(CONFIG_MPC8360) || defined(CONFIG_MPC837x)
+ case ODT_WR_NEVER:
+ case ODT_WR_ONLY_CURRENT:
+ case ODT_WR_ONLY_OTHER_CS:
+#if defined(CONFIG_MPC8360) || defined(CONFIG_MPC837x)
+ case ODT_WR_ONLY_OTHER_DIMM:
+#endif
+#endif
+ /* MPC832x only knows this value */
+ case ODT_WR_ALL:
+ break;
+ default:
+ debug("odt_wr_cfg value invalid.\n");
+ return -EINVAL;
+ }
+
+ bank_bits = ofnode_read_u32_default(node, "bank_bits", 0);
+ switch (bank_bits) {
+ case 2:
+ bank_bits_mask = BANK_BITS_2;
+ break;
+ case 3:
+ bank_bits_mask = BANK_BITS_3;
+ break;
+ default:
+ debug("bank_bits value invalid.\n");
+ return -EINVAL;
+ }
+
+ row_bits = ofnode_read_u32_default(node, "row_bits", 0);
+ switch (row_bits) {
+ case 12:
+ row_bits_mask = ROW_BITS_12;
+ break;
+ case 13:
+ row_bits_mask = ROW_BITS_13;
+ break;
+ case 14:
+ row_bits_mask = ROW_BITS_14;
+ break;
+ default:
+ debug("row_bits value invalid.\n");
+ return -EINVAL;
+ }
+
+ col_bits = ofnode_read_u32_default(node, "col_bits", 0);
+ switch (col_bits) {
+ case 8:
+ col_bits_mask = COL_BITS_8;
+ break;
+ case 9:
+ col_bits_mask = COL_BITS_9;
+ break;
+ case 10:
+ col_bits_mask = COL_BITS_10;
+ break;
+ case 11:
+ col_bits_mask = COL_BITS_11;
+ break;
+ default:
+ debug("col_bits value invalid.\n");
+ return -EINVAL;
+ }
+
+ /* Write CS config value */
+ out_be32(&im->ddr.cs_config[cs], CSCONFIG_ENABLE | auto_precharge |
+ odt_rd_cfg | odt_wr_cfg |
+ bank_bits_mask | row_bits_mask |
+ col_bits_mask);
+ return 0;
+}
+
+int mpc83xx_sdram_spd_init(ofnode node, u32 cs, u32 mapaddr, u32 size)
+{
+ return 0;
+}
+
+static int mpc83xx_sdram_ofdata_to_platdata(struct udevice *dev)
+{
+ return 0;
+}
+
+static int mpc83xx_sdram_probe(struct udevice *dev)
+{
+ struct mpc83xx_sdram_priv *priv = dev_get_priv(dev);
+ immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
+ int res = 0;
+ ofnode subnode;
+ u32 dso, pz_override, nz_override, odt_term, ddr_type, mvref_sel, m_odr;
+ u32 ddrcdr;
+ u32 clock_adjust;
+ u32 ext_refresh_rec, ext_refresh_rec_mask;
+ u32 read_to_write, write_to_read, read_to_read, write_to_write,
+ active_powerdown_exit, precharge_powerdown_exit,
+ odt_powerdown_exit, mode_reg_set_cycle;
+ u32 timing_cfg_0;
+ u32 precharge_to_activate, activate_to_precharge,
+ activate_to_readwrite, mcas_latency, refresh_recovery,
+ last_data_to_precharge, activate_to_activate,
+ last_write_data_to_read;
+ u32 timing_cfg_1;
+ u32 additive_latency, mcas_to_preamble_override, write_latency,
+ read_to_precharge, write_cmd_to_write_data,
+ minimum_cke_pulse_width, four_activates_window;
+ u32 timing_cfg_2;
+ u32 self_refresh, ecc, registered_dram, sdram_type,
+ dynamic_power_management, databus_width, nc_auto_precharge,
+ timing_2t, bank_interleaving_ctrl, precharge_bit_8, half_strength,
+ bypass_initialization;
+ u32 sdram_cfg;
+ u32 force_self_refresh, dll_reset, dqs_config, odt_config,
+ posted_refreshes;
+ u32 sdram_cfg2;
+ u32 refresh_interval, precharge_interval, sdmode, esdmode, esdmode2,
+ esdmode3;
+ u32 sdram_interval;
+ u32 sdram_mode;
+ u32 sdram_mode2;
+
+ priv->total_size = 0;
+
+ /* Disable both banks initially (might be re-enabled in loop below) */
+ out_be32(&im->ddr.cs_config[0], 0);
+ out_be32(&im->ddr.cs_config[1], 0);
+
+ dso = dev_read_u32_default(dev, "driver_software_override", 0);
+ if (dso > 1) {
+ debug("driver_software_override value invalid.\n");
+ return -EINVAL;
+ }
+
+ pz_override = dev_read_u32_default(dev, "p_impedance_override", 0);
+
+ switch (pz_override) {
+ case DSO_P_IMPEDANCE_HIGHEST_Z:
+ case DSO_P_IMPEDANCE_MUCH_HIGHER_Z:
+ case DSO_P_IMPEDANCE_HIGHER_Z:
+ case DSO_P_IMPEDANCE_NOMINAL:
+ case DSO_P_IMPEDANCE_LOWER_Z:
+ break;
+ default:
+ debug("p_impedance_override value invalid.\n");
+ return -EINVAL;
+ }
+
+ nz_override = dev_read_u32_default(dev, "n_impedance_override", 0);
+
+ switch (nz_override) {
+ case DSO_N_IMPEDANCE_HIGHEST_Z:
+ case DSO_N_IMPEDANCE_MUCH_HIGHER_Z:
+ case DSO_N_IMPEDANCE_HIGHER_Z:
+ case DSO_N_IMPEDANCE_NOMINAL:
+ case DSO_N_IMPEDANCE_LOWER_Z:
+ break;
+ default:
+ debug("n_impedance_override value invalid.\n");
+ return -EINVAL;
+ }
+
+ odt_term = dev_read_u32_default(dev, "odt_termination_value", 0);
+ if (odt_term > 1) {
+ debug("odt_termination_value value invalid.\n");
+ return -EINVAL;
+ }
+
+ ddr_type = dev_read_u32_default(dev, "ddr_type", 0);
+ if (ddr_type > 1) {
+ debug("ddr_type value invalid.\n");
+ return -EINVAL;
+ }
+
+ mvref_sel = dev_read_u32_default(dev, "mvref_sel", 0);
+ if (mvref_sel > 1) {
+ debug("mvref_sel value invalid.\n");
+ return -EINVAL;
+ }
+
+ m_odr = dev_read_u32_default(dev, "m_odr", 0);
+ if (mvref_sel > 1) {
+ debug("m_odr value invalid.\n");
+ return -EINVAL;
+ }
+
+ ddrcdr = dso << (31 - 1) |
+ pz_override << (31 - 5) |
+ nz_override << (31 - 9) |
+ odt_term << (31 - 12) |
+ ddr_type << (31 - 13) |
+ mvref_sel << (31 - 29) |
+ m_odr << (31 - 30) | 1;
+
+ /* Configure the DDR control driver register */
+ out_be32(&im->sysconf.ddrcdr, ddrcdr);
+
+ dev_for_each_subnode(subnode, dev) {
+ u32 val[3];
+ u32 cs, addr, size;
+
+ /* CS, map address, size -> three values */
+ ofnode_read_u32_array(subnode, "reg", val, 3);
+
+ cs = val[0];
+ addr = val[1];
+ size = val[2];
+
+ if (cs > 1) {
+ debug("chip select value invalid.\n");
+ return -EINVAL;
+ }
+
+ /* TODO: Sanity check for size. */
+
+ if (ofnode_read_bool(subnode, "read-spd"))
+ res = mpc83xx_sdram_spd_init(subnode, cs, addr, size);
+ else
+ res = mpc83xx_sdram_static_init(subnode, cs, addr,
+ size);
+ if (res)
+ return res;
+ };
+
+ /* TODO: This should only occur for static configuration */
+
+ clock_adjust = dev_read_u32_default(dev, "clock_adjust", 0);
+ switch (clock_adjust) {
+ case CLOCK_ADJUST_025:
+ case CLOCK_ADJUST_05:
+ case CLOCK_ADJUST_075:
+ case CLOCK_ADJUST_1:
+ break;
+ default:
+ debug("clock_adjust value invalid.\n");
+ return -EINVAL;
+ }
+
+ /* Configure the DDR SDRAM Clock Control register */
+ out_be32(&im->ddr.sdram_clk_cntl, clock_adjust);
+
+ ext_refresh_rec = dev_read_u32_default(dev, "ext_refresh_rec", 0);
+ switch (ext_refresh_rec) {
+ case 0:
+ ext_refresh_rec_mask = 0 << TIMING_CFG3_EXT_REFREC_SHIFT;
+ break;
+ case 16:
+ ext_refresh_rec_mask = 1 << TIMING_CFG3_EXT_REFREC_SHIFT;
+ break;
+ case 32:
+ ext_refresh_rec_mask = 2 << TIMING_CFG3_EXT_REFREC_SHIFT;
+ break;
+ case 48:
+ ext_refresh_rec_mask = 3 << TIMING_CFG3_EXT_REFREC_SHIFT;
+ break;
+ case 64:
+ ext_refresh_rec_mask = 4 << TIMING_CFG3_EXT_REFREC_SHIFT;
+ break;
+ case 80:
+ ext_refresh_rec_mask = 5 << TIMING_CFG3_EXT_REFREC_SHIFT;
+ break;
+ case 96:
+ ext_refresh_rec_mask = 6 << TIMING_CFG3_EXT_REFREC_SHIFT;
+ break;
+ case 112:
+ ext_refresh_rec_mask = 7 << TIMING_CFG3_EXT_REFREC_SHIFT;
+ break;
+ default:
+ debug("ext_refresh_rec value invalid.\n");
+ return -EINVAL;
+ }
+
+ /* Configure the DDR SDRAM Timing Configuration 3 register */
+ out_be32(&im->ddr.timing_cfg_3, ext_refresh_rec_mask);
+
+ read_to_write = dev_read_u32_default(dev, "read_to_write", 0);
+ if (read_to_write > 3) {
+ debug("read_to_write value invalid.\n");
+ return -EINVAL;
+ }
+
+ write_to_read = dev_read_u32_default(dev, "write_to_read", 0);
+ if (write_to_read > 3) {
+ debug("write_to_read value invalid.\n");
+ return -EINVAL;
+ }
+
+ read_to_read = dev_read_u32_default(dev, "read_to_read", 0);
+ if (read_to_read > 3) {
+ debug("read_to_read value invalid.\n");
+ return -EINVAL;
+ }
+
+ write_to_write = dev_read_u32_default(dev, "write_to_write", 0);
+ if (write_to_write > 3) {
+ debug("write_to_write value invalid.\n");
+ return -EINVAL;
+ }
+
+ active_powerdown_exit =
+ dev_read_u32_default(dev, "active_powerdown_exit", 0);
+ if (active_powerdown_exit > 7) {
+ debug("active_powerdown_exit value invalid.\n");
+ return -EINVAL;
+ }
+
+ precharge_powerdown_exit =
+ dev_read_u32_default(dev, "precharge_powerdown_exit", 0);
+ if (precharge_powerdown_exit > 7) {
+ debug("precharge_powerdown_exit value invalid.\n");
+ return -EINVAL;
+ }
+
+ odt_powerdown_exit = dev_read_u32_default(dev, "odt_powerdown_exit", 0);
+ if (odt_powerdown_exit > 15) {
+ debug("odt_powerdown_exit value invalid.\n");
+ return -EINVAL;
+ }
+
+ mode_reg_set_cycle = dev_read_u32_default(dev, "mode_reg_set_cycle", 0);
+ if (mode_reg_set_cycle > 15) {
+ debug("mode_reg_set_cycle value invalid.\n");
+ return -EINVAL;
+ }
+
+ timing_cfg_0 = read_to_write << TIMING_CFG0_RWT_SHIFT |
+ write_to_read << TIMING_CFG0_WRT_SHIFT |
+ read_to_read << TIMING_CFG0_RRT_SHIFT |
+ write_to_write << TIMING_CFG0_WWT_SHIFT |
+ active_powerdown_exit << TIMING_CFG0_ACT_PD_EXIT_SHIFT |
+ precharge_powerdown_exit << TIMING_CFG0_PRE_PD_EXIT_SHIFT |
+ odt_powerdown_exit << TIMING_CFG0_ODT_PD_EXIT_SHIFT |
+ mode_reg_set_cycle << TIMING_CFG0_MRS_CYC_SHIFT;
+
+ out_be32(&im->ddr.timing_cfg_0, timing_cfg_0);
+
+ precharge_to_activate =
+ dev_read_u32_default(dev, "precharge_to_activate", 0);
+ if (precharge_to_activate > 7 || precharge_to_activate == 0) {
+ debug("precharge_to_activate value invalid.\n");
+ return -EINVAL;
+ }
+
+ activate_to_precharge =
+ dev_read_u32_default(dev, "activate_to_precharge", 0);
+ if (activate_to_precharge > 15 || activate_to_precharge == 0) {
+ debug("activate_to_precharge value invalid.\n");
+ return -EINVAL;
+ }
+
+ activate_to_readwrite =
+ dev_read_u32_default(dev, "activate_to_readwrite", 0);
+ if (activate_to_readwrite > 7 || activate_to_readwrite == 0) {
+ debug("activate_to_readwrite value invalid.\n");
+ return -EINVAL;
+ }
+
+ /* TODO: MPC8308 only supports caslat >= 3 clocks */
+ mcas_latency = dev_read_u32_default(dev, "mcas_latency", 0);
+ switch (mcas_latency) {
+ case CASLAT_20:
+ case CASLAT_25:
+ case CASLAT_30:
+ case CASLAT_35:
+ case CASLAT_40:
+ case CASLAT_45:
+ case CASLAT_50:
+ break;
+ default:
+ debug("ext_refresh_rec value invalid.\n");
+ return -EINVAL;
+ }
+
+ refresh_recovery = dev_read_u32_default(dev, "refresh_recovery", 0);
+ if (refresh_recovery > 23 || refresh_recovery < 8) {
+ debug("refresh_recovery value invalid.\n");
+ return -EINVAL;
+ }
+
+ last_data_to_precharge =
+ dev_read_u32_default(dev, "last_data_to_precharge", 0);
+ if (last_data_to_precharge > 7 || last_data_to_precharge == 0) {
+ debug("last_data_to_precharge value invalid.\n");
+ return -EINVAL;
+ }
+
+ activate_to_activate =
+ dev_read_u32_default(dev, "activate_to_activate", 0);
+ if (activate_to_activate > 7 || activate_to_activate == 0) {
+ debug("activate_to_activate value invalid.\n");
+ return -EINVAL;
+ }
+
+ last_write_data_to_read =
+ dev_read_u32_default(dev, "last_write_data_to_read", 0);
+ if (last_write_data_to_read > 7 || last_write_data_to_read == 0) {
+ debug("last_write_data_to_read value invalid.\n");
+ return -EINVAL;
+ }
+
+ timing_cfg_1 = precharge_to_activate << TIMING_CFG1_PRETOACT_SHIFT |
+ activate_to_precharge << TIMING_CFG1_ACTTOPRE_SHIFT |
+ activate_to_readwrite << TIMING_CFG1_ACTTORW_SHIFT |
+ mcas_latency << TIMING_CFG1_CASLAT_SHIFT |
+ (refresh_recovery - 8) << TIMING_CFG1_REFREC_SHIFT |
+ last_data_to_precharge << TIMING_CFG1_WRREC_SHIFT |
+ activate_to_activate << TIMING_CFG1_ACTTOACT_SHIFT |
+ last_write_data_to_read << TIMING_CFG1_WRTORD_SHIFT;
+
+ /* Configure the DDR SDRAM Timing Configuration 1 register */
+ out_be32(&im->ddr.timing_cfg_1, timing_cfg_1);
+
+ additive_latency = dev_read_u32_default(dev, "additive_latency", 0);
+ if (additive_latency > 5) {
+ debug("additive_latency value invalid.\n");
+ return -EINVAL;
+ }
+
+ mcas_to_preamble_override =
+ dev_read_u32_default(dev, "mcas_to_preamble_override", 0);
+ switch (mcas_to_preamble_override) {
+ case READ_LAT_PLUS_1:
+ case READ_LAT:
+ case READ_LAT_PLUS_1_4:
+ case READ_LAT_PLUS_1_2:
+ case READ_LAT_PLUS_3_4:
+ case READ_LAT_PLUS_5_4:
+ case READ_LAT_PLUS_3_2:
+ case READ_LAT_PLUS_7_4:
+ case READ_LAT_PLUS_2:
+ case READ_LAT_PLUS_9_4:
+ case READ_LAT_PLUS_5_2:
+ case READ_LAT_PLUS_11_4:
+ case READ_LAT_PLUS_3:
+ case READ_LAT_PLUS_13_4:
+ case READ_LAT_PLUS_7_2:
+ case READ_LAT_PLUS_15_4:
+ case READ_LAT_PLUS_4:
+ case READ_LAT_PLUS_17_4:
+ case READ_LAT_PLUS_9_2:
+ case READ_LAT_PLUS_19_4:
+ break;
+ default:
+ debug("mcas_to_preamble_override value invalid.\n");
+ return -EINVAL;
+ }
+
+ write_latency = dev_read_u32_default(dev, "write_latency", 0);
+ if (write_latency > 7 || write_latency == 0) {
+ debug("write_latency value invalid.\n");
+ return -EINVAL;
+ }
+
+ read_to_precharge = dev_read_u32_default(dev, "read_to_precharge", 0);
+ if (read_to_precharge > 4 || read_to_precharge == 0) {
+ debug("read_to_precharge value invalid.\n");
+ return -EINVAL;
+ }
+
+ write_cmd_to_write_data =
+ dev_read_u32_default(dev, "write_cmd_to_write_data", 0);
+ switch (write_cmd_to_write_data) {
+ case CLOCK_DELAY_0:
+ case CLOCK_DELAY_1_4:
+ case CLOCK_DELAY_1_2:
+ case CLOCK_DELAY_3_4:
+ case CLOCK_DELAY_1:
+ case CLOCK_DELAY_5_4:
+ case CLOCK_DELAY_3_2:
+ break;
+ default:
+ debug("write_cmd_to_write_data value invalid.\n");
+ return -EINVAL;
+ }
+
+ minimum_cke_pulse_width =
+ dev_read_u32_default(dev, "minimum_cke_pulse_width", 0);
+ if (minimum_cke_pulse_width > 4 || minimum_cke_pulse_width == 0) {
+ debug("minimum_cke_pulse_width value invalid.\n");
+ return -EINVAL;
+ }
+
+ four_activates_window =
+ dev_read_u32_default(dev, "four_activates_window", 0);
+ if (four_activates_window > 20 || four_activates_window == 0) {
+ debug("four_activates_window value invalid.\n");
+ return -EINVAL;
+ }
+
+ timing_cfg_2 = additive_latency << TIMING_CFG2_ADD_LAT_SHIFT |
+ mcas_to_preamble_override << TIMING_CFG2_CPO_SHIFT |
+ write_latency << TIMING_CFG2_WR_LAT_DELAY_SHIFT |
+ read_to_precharge << TIMING_CFG2_RD_TO_PRE_SHIFT |
+ write_cmd_to_write_data << TIMING_CFG2_WR_DATA_DELAY_SHIFT |
+ minimum_cke_pulse_width << TIMING_CFG2_CKE_PLS_SHIFT |
+ four_activates_window << TIMING_CFG2_FOUR_ACT_SHIFT;
+
+ out_be32(&im->ddr.timing_cfg_2, timing_cfg_2);
+
+ self_refresh = dev_read_u32_default(dev, "self_refresh", 0);
+ switch (self_refresh) {
+ case SREN_DISABLE:
+ case SREN_ENABLE:
+ break;
+ default:
+ debug("self_refresh value invalid.\n");
+ return -EINVAL;
+ }
+
+ ecc = dev_read_u32_default(dev, "ecc", 0);
+ switch (ecc) {
+ case ECC_DISABLE:
+ case ECC_ENABLE:
+ break;
+ default:
+ debug("ecc value invalid.\n");
+ return -EINVAL;
+ }
+
+ registered_dram = dev_read_u32_default(dev, "registered_dram", 0);
+ switch (registered_dram) {
+ case RD_DISABLE:
+ case RD_ENABLE:
+ break;
+ default:
+ debug("registered_dram value invalid.\n");
+ return -EINVAL;
+ }
+
+ sdram_type = dev_read_u32_default(dev, "sdram_type", 0);
+ switch (sdram_type) {
+ case TYPE_DDR1:
+ case TYPE_DDR2:
+ break;
+ default:
+ debug("sdram_type value invalid.\n");
+ return -EINVAL;
+ }
+
+ dynamic_power_management =
+ dev_read_u32_default(dev, "dynamic_power_management", 0);
+ switch (dynamic_power_management) {
+ case DYN_PWR_DISABLE:
+ case DYN_PWR_ENABLE:
+ break;
+ default:
+ debug("dynamic_power_management value invalid.\n");
+ return -EINVAL;
+ }
+
+ databus_width = dev_read_u32_default(dev, "databus_width", 0);
+ switch (databus_width) {
+ case DATA_BUS_WIDTH_16:
+ case DATA_BUS_WIDTH_32:
+ break;
+ default:
+ debug("databus_width value invalid.\n");
+ return -EINVAL;
+ }
+
+ nc_auto_precharge = dev_read_u32_default(dev, "nc_auto_precharge", 0);
+ switch (nc_auto_precharge) {
+ case NCAP_DISABLE:
+ case NCAP_ENABLE:
+ break;
+ default:
+ debug("nc_auto_precharge value invalid.\n");
+ return -EINVAL;
+ }
+
+ timing_2t = dev_read_u32_default(dev, "timing_2t", 0);
+ switch (timing_2t) {
+ case TIMING_1T:
+ case TIMING_2T:
+ break;
+ default:
+ debug("timing_2t value invalid.\n");
+ return -EINVAL;
+ }
+
+ bank_interleaving_ctrl =
+ dev_read_u32_default(dev, "bank_interleaving_ctrl", 0);
+ switch (bank_interleaving_ctrl) {
+ case INTERLEAVE_NONE:
+ case INTERLEAVE_1_AND_2:
+ break;
+ default:
+ debug("bank_interleaving_ctrl value invalid.\n");
+ return -EINVAL;
+ }
+
+ precharge_bit_8 = dev_read_u32_default(dev, "precharge_bit_8", 0);
+ switch (precharge_bit_8) {
+ case PRECHARGE_MA_10:
+ case PRECHARGE_MA_8:
+ break;
+ default:
+ debug("precharge_bit_8 value invalid.\n");
+ return -EINVAL;
+ }
+
+ half_strength = dev_read_u32_default(dev, "half_strength", 0);
+ switch (half_strength) {
+ case STRENGTH_FULL:
+ case STRENGTH_HALF:
+ break;
+ default:
+ debug("half_strength value invalid.\n");
+ return -EINVAL;
+ }
+
+ bypass_initialization =
+ dev_read_u32_default(dev, "bypass_initialization", 0);
+ switch (bypass_initialization) {
+ case INITIALIZATION_DONT_BYPASS:
+ case INITIALIZATION_BYPASS:
+ break;
+ default:
+ debug("bypass_initialization value invalid.\n");
+ return -EINVAL;
+ }
+
+ sdram_cfg = self_refresh << SDRAM_CFG_SREN_SHIFT |
+ ecc << SDRAM_CFG_ECC_EN_SHIFT |
+ registered_dram << SDRAM_CFG_RD_EN_SHIFT |
+ sdram_type << SDRAM_CFG_SDRAM_TYPE_SHIFT |
+ dynamic_power_management << SDRAM_CFG_DYN_PWR_SHIFT |
+ databus_width << SDRAM_CFG_DBW_SHIFT |
+ nc_auto_precharge << SDRAM_CFG_NCAP_SHIFT |
+ timing_2t << SDRAM_CFG_2T_EN_SHIFT |
+ bank_interleaving_ctrl << SDRAM_CFG_BA_INTLV_CTL_SHIFT |
+ precharge_bit_8 << SDRAM_CFG_PCHB8_SHIFT |
+ half_strength << SDRAM_CFG_HSE_SHIFT |
+ bypass_initialization << SDRAM_CFG_BI_SHIFT;
+
+ out_be32(&im->ddr.sdram_cfg, sdram_cfg);
+
+ force_self_refresh = dev_read_u32_default(dev, "force_self_refresh", 0);
+ switch (force_self_refresh) {
+ case MODE_NORMAL:
+ case MODE_REFRESH:
+ break;
+ default:
+ debug("force_self_refresh value invalid.\n");
+ return -EINVAL;
+ }
+
+ dll_reset = dev_read_u32_default(dev, "dll_reset", 0);
+ switch (dll_reset) {
+ case DLL_RESET_ENABLE:
+ case DLL_RESET_DISABLE:
+ break;
+ default:
+ debug("dll_reset value invalid.\n");
+ return -EINVAL;
+ }
+
+ dqs_config = dev_read_u32_default(dev, "dqs_config", 0);
+ switch (dqs_config) {
+ case DQS_TRUE:
+ break;
+ default:
+ debug("dqs_config value invalid.\n");
+ return -EINVAL;
+ }
+
+ odt_config = dev_read_u32_default(dev, "odt_config", 0);
+ switch (odt_config) {
+ case ODT_ASSERT_NEVER:
+ case ODT_ASSERT_WRITES:
+ case ODT_ASSERT_READS:
+ case ODT_ASSERT_ALWAYS:
+ break;
+ default:
+ debug("odt_config value invalid.\n");
+ return -EINVAL;
+ }
+
+ posted_refreshes = dev_read_u32_default(dev, "posted_refreshes", 0);
+ if (posted_refreshes > 8 || posted_refreshes == 0) {
+ debug("posted_refreshes value invalid.\n");
+ return -EINVAL;
+ }
+
+ sdram_cfg2 = force_self_refresh << SDRAM_CFG2_FRC_SR_SHIFT |
+ dll_reset << SDRAM_CFG2_DLL_RST_DIS |
+ dqs_config << SDRAM_CFG2_DQS_CFG |
+ odt_config << SDRAM_CFG2_ODT_CFG |
+ posted_refreshes << SDRAM_CFG2_NUM_PR;
+
+ out_be32(&im->ddr.sdram_cfg2, sdram_cfg2);
+
+ sdmode = dev_read_u32_default(dev, "sdmode", 0);
+ if (sdmode > 0xFFFF) {
+ debug("sdmode value invalid.\n");
+ return -EINVAL;
+ }
+
+ esdmode = dev_read_u32_default(dev, "esdmode", 0);
+ if (esdmode > 0xFFFF) {
+ debug("esdmode value invalid.\n");
+ return -EINVAL;
+ }
+
+ sdram_mode = sdmode << SDRAM_MODE_SD_SHIFT |
+ esdmode << SDRAM_MODE_ESD_SHIFT;
+
+ out_be32(&im->ddr.sdram_mode, sdram_mode);
+
+ esdmode2 = dev_read_u32_default(dev, "esdmode2", 0);
+ if (esdmode2 > 0xFFFF) {
+ debug("esdmode2 value invalid.\n");
+ return -EINVAL;
+ }
+
+ esdmode3 = dev_read_u32_default(dev, "esdmode3", 0);
+ if (esdmode3 > 0xFFFF) {
+ debug("esdmode3 value invalid.\n");
+ return -EINVAL;
+ }
+
+ sdram_mode2 = esdmode2 << SDRAM_MODE2_ESD2_SHIFT |
+ esdmode3 << SDRAM_MODE2_ESD3_SHIFT;
+
+ out_be32(&im->ddr.sdram_mode2, sdram_mode2);
+
+ refresh_interval = dev_read_u32_default(dev, "refresh_interval", 0);
+ if (refresh_interval > 0xFFFF) {
+ debug("refresh_interval value invalid.\n");
+ return -EINVAL;
+ }
+
+ precharge_interval = dev_read_u32_default(dev, "precharge_interval", 0);
+ if (precharge_interval > 0x3FFF) {
+ debug("precharge_interval value invalid.\n");
+ return -EINVAL;
+ }
+
+ sdram_interval = refresh_interval << SDRAM_INTERVAL_REFINT_SHIFT |
+ precharge_interval << SDRAM_INTERVAL_BSTOPRE_SHIFT;
+
+ out_be32(&im->ddr.sdram_interval, sdram_interval);
+ sync();
+
+ /* Enable DDR controller */
+ setbits_be32(&im->ddr.sdram_cfg, SDRAM_CFG_MEM_EN);
+ sync();
+
+ dev_for_each_subnode(subnode, dev) {
+ u32 val[3];
+ u32 addr, size;
+
+ /* CS, map address, size -> three values */
+ ofnode_read_u32_array(subnode, "reg", val, 3);
+
+ addr = val[1];
+ size = val[2];
+
+ priv->total_size += get_ram_size((long int *)addr, size);
+ };
+
+ gd->ram_size = priv->total_size;
+
+ return 0;
+}
+
+static int mpc83xx_sdram_get_info(struct udevice *dev, struct ram_info *info)
+{
+ return 0;
+}
+
+static struct ram_ops mpc83xx_sdram_ops = {
+ .get_info = mpc83xx_sdram_get_info,
+};
+
+static const struct udevice_id mpc83xx_sdram_ids[] = {
+ { .compatible = "fsl,mpc83xx-mem-controller" },
+ { /* sentinel */ }
+};
+
+U_BOOT_DRIVER(mpc83xx_sdram) = {
+ .name = "mpc83xx_sdram",
+ .id = UCLASS_RAM,
+ .of_match = mpc83xx_sdram_ids,
+ .ops = &mpc83xx_sdram_ops,
+ .ofdata_to_platdata = mpc83xx_sdram_ofdata_to_platdata,
+ .probe = mpc83xx_sdram_probe,
+ .priv_auto_alloc_size = sizeof(struct mpc83xx_sdram_priv),
+};
diff --git a/include/dt-bindings/memory/mpc83xx-sdram.h b/include/dt-bindings/memory/mpc83xx-sdram.h
new file mode 100644
index 0000000000..0f970008b6
--- /dev/null
+++ b/include/dt-bindings/memory/mpc83xx-sdram.h
@@ -0,0 +1,143 @@
+#ifndef DT_BINDINGS_MPC83XX_SDRAM_H
+#define DT_BINDINGS_MPC83XX_SDRAM_H
+
+#define DSO_DISABLE 0
+#define DSO_ENABLE 1
+
+#define DSO_P_IMPEDANCE_HIGHEST_Z 0x0
+#define DSO_P_IMPEDANCE_MUCH_HIGHER_Z 0x8
+#define DSO_P_IMPEDANCE_HIGHER_Z 0xC
+#define DSO_P_IMPEDANCE_NOMINAL 0xE
+#define DSO_P_IMPEDANCE_LOWER_Z 0xF
+
+#define DSO_N_IMPEDANCE_HIGHEST_Z 0x0
+#define DSO_N_IMPEDANCE_MUCH_HIGHER_Z 0x8
+#define DSO_N_IMPEDANCE_HIGHER_Z 0xC
+#define DSO_N_IMPEDANCE_NOMINAL 0xE
+#define DSO_N_IMPEDANCE_LOWER_Z 0xF
+
+#define ODT_TERMINATION_75_OHM 0
+#define ODT_TERMINATION_150_OHM 1
+
+#define DDR_TYPE_DDR2_1_8_VOLT 0
+#define DDR_TYPE_DDR1_2_5_VOLT 1
+
+#define MVREF_SEL_EXTERNAL 0
+#define MVREF_SEL_INTERNAL_GVDD 1
+
+#define M_ODR_ENABLE 0
+#define M_ODR_DISABLE 1
+
+/* CS config register */
+
+#define AUTO_PRECHARGE_ENABLE 0x00800000
+#define AUTO_PRECHARGE_DISABLE 0x00000000
+
+#define ODT_RD_NEVER 0x00000000
+#define ODT_RD_ONLY_CURRENT 0x00100000
+#define ODT_RD_ONLY_OTHER_CS 0x00200000
+#define ODT_RD_ALL 0x00400000
+#define ODT_WR_NEVER 0x00000000
+#define ODT_WR_ONLY_CURRENT 0x00010000
+#define ODT_WR_ONLY_OTHER_CS 0x00020000
+#define ODT_WR_ALL 0x00040000
+
+/* DDR SDRAM Clock Control register */
+
+#define CLOCK_ADJUST_025 0x01000000
+#define CLOCK_ADJUST_05 0x02000000
+#define CLOCK_ADJUST_075 0x03000000
+#define CLOCK_ADJUST_1 0x04000000
+
+#define CASLAT_20 0x3 /* CAS latency = 2.0 */
+#define CASLAT_25 0x4 /* CAS latency = 2.5 */
+#define CASLAT_30 0x5 /* CAS latency = 3.0 */
+#define CASLAT_35 0x6 /* CAS latency = 3.5 */
+#define CASLAT_40 0x7 /* CAS latency = 4.0 */
+#define CASLAT_45 0x8 /* CAS latency = 4.5 */
+#define CASLAT_50 0x9 /* CAS latency = 5.0 */
+
+#define READ_LAT_PLUS_1 0x0
+#define READ_LAT 0x2
+#define READ_LAT_PLUS_1_4 0x3
+#define READ_LAT_PLUS_1_2 0x4
+#define READ_LAT_PLUS_3_4 0x5
+/* #define READ_LAT_PLUS_1 0x6 */
+#define READ_LAT_PLUS_5_4 0x7
+#define READ_LAT_PLUS_3_2 0x8
+#define READ_LAT_PLUS_7_4 0x9
+#define READ_LAT_PLUS_2 0xA
+#define READ_LAT_PLUS_9_4 0xB
+#define READ_LAT_PLUS_5_2 0xC
+#define READ_LAT_PLUS_11_4 0xD
+#define READ_LAT_PLUS_3 0xE
+#define READ_LAT_PLUS_13_4 0xF
+#define READ_LAT_PLUS_7_2 0x10
+#define READ_LAT_PLUS_15_4 0x11
+#define READ_LAT_PLUS_4 0x12
+#define READ_LAT_PLUS_17_4 0x13
+#define READ_LAT_PLUS_9_2 0x14
+#define READ_LAT_PLUS_19_4 0x15
+
+#define CLOCK_DELAY_0 0x0
+#define CLOCK_DELAY_1_4 0x1
+#define CLOCK_DELAY_1_2 0x2
+#define CLOCK_DELAY_3_4 0x3
+#define CLOCK_DELAY_1 0x4
+#define CLOCK_DELAY_5_4 0x5
+#define CLOCK_DELAY_3_2 0x6
+
+/* DDR SDRAM Control Configuration */
+
+#define SREN_DISABLE 0x0
+#define SREN_ENABLE 0x1
+
+#define ECC_DISABLE 0x0
+#define ECC_ENABLE 0x1
+
+#define RD_DISABLE 0x0
+#define RD_ENABLE 0x1
+
+#define TYPE_DDR1 0x2
+#define TYPE_DDR2 0x3
+
+#define DYN_PWR_DISABLE 0x0
+#define DYN_PWR_ENABLE 0x1
+
+#define DATA_BUS_WIDTH_16 0x1
+#define DATA_BUS_WIDTH_32 0x2
+
+#define NCAP_DISABLE 0x0
+#define NCAP_ENABLE 0x1
+
+#define TIMING_1T 0x0
+#define TIMING_2T 0x1
+
+#define INTERLEAVE_NONE 0x0
+#define INTERLEAVE_1_AND_2 0x1
+
+#define PRECHARGE_MA_10 0x0
+#define PRECHARGE_MA_8 0x1
+
+#define STRENGTH_FULL 0x0
+#define STRENGTH_HALF 0x1
+
+#define INITIALIZATION_DONT_BYPASS 0x0
+#define INITIALIZATION_BYPASS 0x1
+
+/* DDR SDRAM Control Configuration 2 */
+
+#define MODE_NORMAL 0x0
+#define MODE_REFRESH 0x1
+
+#define DLL_RESET_ENABLE 0x0
+#define DLL_RESET_DISABLE 0x1
+
+#define DQS_TRUE 0x0
+
+#define ODT_ASSERT_NEVER 0x0
+#define ODT_ASSERT_WRITES 0x1
+#define ODT_ASSERT_READS 0x2
+#define ODT_ASSERT_ALWAYS 0x3
+
+#endif
diff --git a/include/mpc83xx.h b/include/mpc83xx.h
index b5a0bbf847..26258126d6 100644
--- a/include/mpc83xx.h
+++ b/include/mpc83xx.h
@@ -1111,6 +1111,8 @@
#define CSBNDS_EA 0x000000FF
#define CSBNDS_EA_SHIFT 24
+#ifndef CONFIG_MPC83XX_SDRAM
+
/*
* CSn_CONFIG - Chip Select Configuration Register
*/
@@ -1408,6 +1410,8 @@
#define ECC_ERROR_MAN_SBEC (0xff000000 >> 24)
#define ECC_ERROR_MAN_SBEC_SHIFT 0
+#endif /* !CONFIG_MPC83XX_SDRAM */
+
/*
* CONFIG_ADDRESS - PCI Config Address Register
*/
@@ -1511,6 +1515,7 @@
*/
#define PMCCR1_POWER_OFF 0x00000020
+#ifndef CONFIG_RAM
/*
* DDRCDR - DDR Control Driver Register
*/
@@ -1532,6 +1537,7 @@
#define DDRCDR_DDR_CFG 0x00040000
#define DDRCDR_M_ODR 0x00000002
#define DDRCDR_Q_DRN 0x00000001
+#endif /* !CONFIG_RAM */
/*
* PCIE Bridge Register
--
2.16.1
