ap807: mochi: add mochi driver for Armada-AP807

Change-Id: I2866a307d45728d5a616a03813f62d3a9b3e2665
Signed-off-by: Hanna Hawa <hannah@marvell.com>
Reviewed-on: http://vgitil04.il.marvell.com:8080/52433
Reviewed-by: Kostya Porotchkin <kostap@marvell.com>
Tested-by: iSoC Platform CI <ykjenk@marvell.com>

1 files changed, 214 insertions, 0 deletions

diff --git a/drivers/marvell/mochi/ap807_setup.c b/drivers/marvell/mochi/ap807_setup.c
new file mode 100644
index 00000000..a6bbba6a
--- /dev/null
+++ b/drivers/marvell/mochi/ap807_setup.c
@@ -0,0 +1,214 @@
+/*
+ * Copyright (C) 2018 Marvell International Ltd.
+ *
+ * SPDX-License-Identifier:	BSD-3-Clause
+ * https://spdx.org/licenses
+ */
+
+#include <plat_def.h>
+#include <mmio.h>
+#include <ap_setup.h>
+#include <io_win.h>
+#include <ccu.h>
+#include <mci.h>
+#include <cache_llc.h>
+#include <debug.h>
+
+#define SMMU_sACR				(MVEBU_SMMU_BASE + 0x10)
+#define SMMU_sACR_PG_64K			(1 << 16)
+
+#define CCU_GSPMU_CR				(MVEBU_CCU_BASE(MVEBU_AP0) + 0x3F0)
+#define GSPMU_CPU_CONTROL			(0x1 << 0)
+
+#define CCU_HTC_CR				(MVEBU_CCU_BASE(MVEBU_AP0) + 0x200)
+#define CCU_SET_POC_OFFSET			5
+
+#define DSS_CR0					(MVEBU_RFU_BASE + 0x100)
+#define DVM_48BIT_VA_ENABLE			(1 << 21)
+
+/* Secure MoChi incoming access */
+#define SEC_MOCHI_IN_ACC_REG			(MVEBU_RFU_BASE + 0x4738)
+#define SEC_MOCHI_IN_ACC_IHB0_EN		(1)
+#define SEC_MOCHI_IN_ACC_IHB1_EN		(1 << 3)
+#define SEC_MOCHI_IN_ACC_IHB2_EN		(1 << 6)
+#define SEC_MOCHI_IN_ACC_PIDI_EN		(1 << 9)
+#define SEC_IN_ACCESS_ENA_ALL_MASTERS		(SEC_MOCHI_IN_ACC_IHB0_EN | \
+						 SEC_MOCHI_IN_ACC_IHB1_EN | \
+						 SEC_MOCHI_IN_ACC_IHB2_EN | \
+						 SEC_MOCHI_IN_ACC_PIDI_EN)
+
+/* SYSRST_OUTn Config definitions */
+#define MVEBU_SYSRST_OUT_CONFIG_REG		(MVEBU_MISC_SOC_BASE + 0x4)
+#define WD_MASK_SYS_RST_OUT			(1 << 2)
+
+/* DSS PHY for DRAM */
+#define DSS_SCR_REG				(MVEBU_RFU_BASE + 0x208)
+#define DSS_PPROT_OFFS				4
+#define DSS_PPROT_MASK				0x7
+#define DSS_PPROT_PRIV_SECURE_DATA		0x1
+
+/* Used for Units of AP-807 (e.g. SDIO and etc) */
+#define MVEBU_AXI_ATTR_BASE			(MVEBU_REGS_BASE + 0x6F4580)
+#define MVEBU_AXI_ATTR_REG(index)		(MVEBU_AXI_ATTR_BASE + 0x4 * index)
+
+enum axi_attr {
+	AXI_SDIO_ATTR = 0,
+	AXI_DFX_ATTR,
+	AXI_MAX_ATTR,
+};
+
+static void ap_sec_masters_access_en(uint32_t enable)
+{
+	uint32_t reg;
+
+	/* Open/Close incoming access for all masters.
+	   The access is disabled in trusted boot mode
+	   Could only be done in EL3
+	 */
+	reg = mmio_read_32(SEC_MOCHI_IN_ACC_REG);
+	if (enable)
+		mmio_write_32(SEC_MOCHI_IN_ACC_REG, reg | SEC_IN_ACCESS_ENA_ALL_MASTERS);
+	else
+		mmio_write_32(SEC_MOCHI_IN_ACC_REG, reg & ~SEC_IN_ACCESS_ENA_ALL_MASTERS);
+}
+
+static void setup_smmu(void)
+{
+	uint32_t reg;
+
+	/* Set the SMMU page size to 64 KB */
+	reg = mmio_read_32(SMMU_sACR);
+	reg |= SMMU_sACR_PG_64K;
+	mmio_write_32(SMMU_sACR, reg);
+}
+
+static void init_aurora2(void)
+{
+	uint32_t reg;
+
+	/* Enable GSPMU control by CPU */
+	reg = mmio_read_32(CCU_GSPMU_CR);
+	reg |= GSPMU_CPU_CONTROL;
+	mmio_write_32(CCU_GSPMU_CR, reg);
+
+#if !LLC_DISABLE
+	/* Enable LLC for AP807 in exclusive mode */
+	llc_enable(0, 1);
+
+	/* Set point of coherency to DDR.
+	   This is required by units which have
+	   SW cache coherency */
+	reg = mmio_read_32(CCU_HTC_CR);
+	reg |= (0x1 << CCU_SET_POC_OFFSET);
+	mmio_write_32(CCU_HTC_CR, reg);
+#endif /* !LLC_DISABLE */
+}
+
+
+/* MCIx indirect access register are based by default at 0xf4000000/0xf6000000
+ * to avoid conflict of internal registers of units connected via MCIx, which
+ * can be based on the same address (i.e CP1 base is also 0xf4000000),
+ * the following routines remaps the MCIx indirect bases to another domain
+ */
+static void mci_remap_indirect_access_base(void)
+{
+	uint32_t mci;
+
+	for (mci = 0; mci < MCI_MAX_UNIT_ID; mci++)
+		mmio_write_32(MCIX4_REG_START_ADDRESS_REG(mci),
+				  MVEBU_MCI_REG_BASE_REMAP(mci) >> MCI_REMAP_OFF_SHIFT);
+}
+
+static void ap807_axi_attr_init(void)
+{
+	uint32_t index, data;
+
+	/* Initialize AXI attributes for AP807 */
+	/* Go over the AXI attributes and set Ax-Cache and Ax-Domain */
+	for (index = 0; index < AXI_MAX_ATTR; index++) {
+		switch (index) {
+		/* DFX works with no coherent only -
+		   there's no option to configure the Ax-Cache and Ax-Domain */
+		case AXI_DFX_ATTR:
+			continue;
+		default:
+			/* Set Ax-Cache as cacheable, no allocate, modifiable, bufferable
+			 The values are different because Read & Write definition
+			 is different in Ax-Cache */
+			data = mmio_read_32(MVEBU_AXI_ATTR_REG(index));
+			data &= ~MVEBU_AXI_ATTR_ARCACHE_MASK;
+			data |= (CACHE_ATTR_WRITE_ALLOC | CACHE_ATTR_CACHEABLE | CACHE_ATTR_BUFFERABLE)
+				<< MVEBU_AXI_ATTR_ARCACHE_OFFSET;
+			data &= ~MVEBU_AXI_ATTR_AWCACHE_MASK;
+			data |= (CACHE_ATTR_READ_ALLOC | CACHE_ATTR_CACHEABLE | CACHE_ATTR_BUFFERABLE)
+				<< MVEBU_AXI_ATTR_AWCACHE_OFFSET;
+			/* Set Ax-Domain as Outer domain */
+			data &= ~MVEBU_AXI_ATTR_ARDOMAIN_MASK;
+			data |= DOMAIN_OUTER_SHAREABLE << MVEBU_AXI_ATTR_ARDOMAIN_OFFSET;
+			data &= ~MVEBU_AXI_ATTR_AWDOMAIN_MASK;
+			data |= DOMAIN_OUTER_SHAREABLE << MVEBU_AXI_ATTR_AWDOMAIN_OFFSET;
+			mmio_write_32(MVEBU_AXI_ATTR_REG(index), data);
+		}
+	}
+
+	return;
+}
+
+static void misc_soc_configurations(void)
+{
+	uint32_t reg;
+
+	/* Enable 48-bit VA */
+	mmio_setbits_32(DSS_CR0, DVM_48BIT_VA_ENABLE);
+
+	/* Un-mask Watchdog reset from influencing the SYSRST_OUTn.
+	 * Otherwise, upon WD timeout, the WD reset singal won't trigger reset
+	 */
+	reg = mmio_read_32(MVEBU_SYSRST_OUT_CONFIG_REG);
+	reg &= ~(WD_MASK_SYS_RST_OUT);
+	mmio_write_32(MVEBU_SYSRST_OUT_CONFIG_REG, reg);
+}
+
+void ap_init(void)
+{
+	/* Setup Aurora2. */
+	init_aurora2();
+
+	/* configure MCI mapping */
+	mci_remap_indirect_access_base();
+
+	/* configure IO_WIN windows */
+	init_io_win(MVEBU_AP0);
+
+	/* configure CCU windows */
+	init_ccu(MVEBU_AP0);
+
+	/* configure the SMMU */
+	setup_smmu();
+
+	/* Open AP incoming access for all masters */
+	ap_sec_masters_access_en(1);
+
+	/* configure axi for AP */
+	ap807_axi_attr_init();
+
+	/* misc configuration of the SoC */
+	misc_soc_configurations();
+}
+
+static void ap807_dram_phy_access_config(void)
+{
+	uint32_t reg_val;
+	/* Update DSS port access permission to DSS_PHY */
+	reg_val = mmio_read_32(DSS_SCR_REG);
+	reg_val &= ~(DSS_PPROT_MASK << DSS_PPROT_OFFS);
+	reg_val |= ((DSS_PPROT_PRIV_SECURE_DATA & DSS_PPROT_MASK) << DSS_PPROT_OFFS);
+	mmio_write_32(DSS_SCR_REG, reg_val);
+}
+
+void ap_ble_init(void)
+{
+	/* Enable DSS port */
+	ap807_dram_phy_access_config();
+}
+