blob: 7cdfe051edad0008e933124ebfbbd6379b20ee3b [file] [log] [blame]
/*
* Copyright (C) 2018 Marvell International Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
* https://spdx.org/licenses
*/
/* AP807 Marvell SoC driver */
#include <common/debug.h>
#include <drivers/marvell/cache_llc.h>
#include <drivers/marvell/ccu.h>
#include <drivers/marvell/io_win.h>
#include <drivers/marvell/iob.h>
#include <drivers/marvell/mci.h>
#include <drivers/marvell/mochi/ap_setup.h>
#include <lib/mmio.h>
#include <mvebu_def.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)
/* SoC RFU / IHBx4 Control */
#define MCIX4_807_REG_START_ADDR_REG(unit_id) (MVEBU_RFU_BASE + \
0x4258 + (unit_id * 0x4))
/* 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_ENABLE
/* 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_ENABLE */
errata_wa_init();
}
/* 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_807_REG_START_ADDR_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);
}
}
}
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 signal 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);
}
/*
* By default all external CPs start with configuration address space set to
* 0xf200_0000. To overcome this issue, go in the loop and initialize the
* CP one by one, using temporary window configuration which allows to access
* each CP and update its configuration space according to decoding
* windows scheme defined for each platform.
*/
void update_cp110_default_win(int cp_id)
{
int mci_id = cp_id - 1;
uintptr_t cp110_base, cp110_temp_base;
/* CP110 default configuration address space */
cp110_temp_base = MVEBU_AP_IO_BASE(MVEBU_AP0);
struct addr_map_win iowin_temp_win = {
.base_addr = cp110_temp_base,
.win_size = MVEBU_CP_OFFSET,
};
iowin_temp_win.target_id = mci_id;
iow_temp_win_insert(0, &iowin_temp_win, 1);
/* Calculate the new CP110 - base address */
cp110_base = MVEBU_CP_REGS_BASE(cp_id);
/* Go and update the CP110 configuration address space */
iob_cfg_space_update(0, cp_id, cp110_temp_base, cp110_base);
/* Remove the temporary IO-WIN window */
iow_temp_win_remove(0, &iowin_temp_win, 1);
}
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();
}
int ap_get_count(void)
{
return 1;
}