refactor(st-ddr): reorganize generic and specific elements
stm32mp_ddrctl structure contains DDRCTRL registers definitions.
stm32mp_ddr_info contains general DDR information extracted from DT.
stm32mp_ddr_size moves to the generic side.
stm32mp1_ddr_priv contains platform private data.
stm32mp_ddr_dt_get_info() and stm32mp_ddr_dt_get_param() allow to
retrieve data from DT. They are located in new generic c/h files in
which stm32mp_ddr_param structure is declared. Platform makefile
is updated.
Adapt driver with this new classification.
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Change-Id: I4187376c9fff1a30e7a94407d188391547107997
diff --git a/drivers/st/ddr/stm32mp_ddr.c b/drivers/st/ddr/stm32mp_ddr.c
new file mode 100644
index 0000000..ffc85ea
--- /dev/null
+++ b/drivers/st/ddr/stm32mp_ddr.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2022, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <drivers/delay_timer.h>
+#include <drivers/st/stm32mp_ddr.h>
+#include <drivers/st/stm32mp_ddrctrl_regs.h>
+#include <drivers/st/stm32mp_pmic.h>
+#include <lib/mmio.h>
+
+#include <platform_def.h>
+
+#define INVALID_OFFSET 0xFFU
+
+static uintptr_t get_base_addr(const struct stm32mp_ddr_priv *priv, enum stm32mp_ddr_base_type base)
+{
+ if (base == DDRPHY_BASE) {
+ return (uintptr_t)priv->phy;
+ } else {
+ return (uintptr_t)priv->ctl;
+ }
+}
+
+void stm32mp_ddr_set_reg(const struct stm32mp_ddr_priv *priv, enum stm32mp_ddr_reg_type type,
+ const void *param, const struct stm32mp_ddr_reg_info *ddr_registers)
+{
+ unsigned int i;
+ unsigned int value;
+ enum stm32mp_ddr_base_type base = ddr_registers[type].base;
+ uintptr_t base_addr = get_base_addr(priv, base);
+ const struct stm32mp_ddr_reg_desc *desc = ddr_registers[type].desc;
+
+ VERBOSE("init %s\n", ddr_registers[type].name);
+ for (i = 0; i < ddr_registers[type].size; i++) {
+ uintptr_t ptr = base_addr + desc[i].offset;
+
+ if (desc[i].par_offset == INVALID_OFFSET) {
+ ERROR("invalid parameter offset for %s", desc[i].name);
+ panic();
+ } else {
+ value = *((uint32_t *)((uintptr_t)param +
+ desc[i].par_offset));
+ mmio_write_32(ptr, value);
+ }
+ }
+}
+
+/* Start quasi dynamic register update */
+void stm32mp_ddr_start_sw_done(struct stm32mp_ddrctl *ctl)
+{
+ mmio_clrbits_32((uintptr_t)&ctl->swctl, DDRCTRL_SWCTL_SW_DONE);
+ VERBOSE("[0x%lx] swctl = 0x%x\n",
+ (uintptr_t)&ctl->swctl, mmio_read_32((uintptr_t)&ctl->swctl));
+}
+
+/* Wait quasi dynamic register update */
+void stm32mp_ddr_wait_sw_done_ack(struct stm32mp_ddrctl *ctl)
+{
+ uint64_t timeout;
+ uint32_t swstat;
+
+ mmio_setbits_32((uintptr_t)&ctl->swctl, DDRCTRL_SWCTL_SW_DONE);
+ VERBOSE("[0x%lx] swctl = 0x%x\n",
+ (uintptr_t)&ctl->swctl, mmio_read_32((uintptr_t)&ctl->swctl));
+
+ timeout = timeout_init_us(TIMEOUT_US_1S);
+ do {
+ swstat = mmio_read_32((uintptr_t)&ctl->swstat);
+ VERBOSE("[0x%lx] swstat = 0x%x ",
+ (uintptr_t)&ctl->swstat, swstat);
+ if (timeout_elapsed(timeout)) {
+ panic();
+ }
+ } while ((swstat & DDRCTRL_SWSTAT_SW_DONE_ACK) == 0U);
+
+ VERBOSE("[0x%lx] swstat = 0x%x\n",
+ (uintptr_t)&ctl->swstat, swstat);
+}
+
+void stm32mp_ddr_enable_axi_port(struct stm32mp_ddrctl *ctl)
+{
+ /* Enable uMCTL2 AXI port 0 */
+ mmio_setbits_32((uintptr_t)&ctl->pctrl_0, DDRCTRL_PCTRL_N_PORT_EN);
+ VERBOSE("[0x%lx] pctrl_0 = 0x%x\n", (uintptr_t)&ctl->pctrl_0,
+ mmio_read_32((uintptr_t)&ctl->pctrl_0));
+
+#if STM32MP_DDR_DUAL_AXI_PORT
+ /* Enable uMCTL2 AXI port 1 */
+ mmio_setbits_32((uintptr_t)&ctl->pctrl_1, DDRCTRL_PCTRL_N_PORT_EN);
+ VERBOSE("[0x%lx] pctrl_1 = 0x%x\n", (uintptr_t)&ctl->pctrl_1,
+ mmio_read_32((uintptr_t)&ctl->pctrl_1));
+#endif
+
+}
+
+int stm32mp_board_ddr_power_init(enum ddr_type ddr_type)
+{
+ if (dt_pmic_status() > 0) {
+ return pmic_ddr_power_init(ddr_type);
+ }
+
+ return 0;
+}