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/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2019 Andes Technology Corporation
*
* Authors:
* Zong Li <zong@andestech.com>
* Nylon Chen <nylon7@andestech.com>
*/
#include <sbi/riscv_asm.h>
#include <sbi/riscv_encoding.h>
#include <sbi/sbi_console.h>
#include <sbi/sbi_const.h>
#include <sbi/sbi_platform.h>
#include <sbi_utils/fdt/fdt_helper.h>
#include <sbi_utils/irqchip/plic.h>
#include <sbi_utils/serial/uart8250.h>
#include "platform.h"
#include "plicsw.h"
#include "plmt.h"
/* Platform final initialization. */
static int ae350_final_init(bool cold_boot)
{
void *fdt;
/* enable L1 cache */
uintptr_t mcache_ctl_val = csr_read(CSR_MCACHECTL);
if (!(mcache_ctl_val & V5_MCACHE_CTL_IC_EN))
mcache_ctl_val |= V5_MCACHE_CTL_IC_EN;
if (!(mcache_ctl_val & V5_MCACHE_CTL_DC_EN))
mcache_ctl_val |= V5_MCACHE_CTL_DC_EN;
if (!(mcache_ctl_val & V5_MCACHE_CTL_CCTL_SUEN))
mcache_ctl_val |= V5_MCACHE_CTL_CCTL_SUEN;
csr_write(CSR_MCACHECTL, mcache_ctl_val);
/* enable L2 cache */
uint32_t *l2c_ctl_base = (void *)AE350_L2C_ADDR + V5_L2C_CTL_OFFSET;
uint32_t l2c_ctl_val = *l2c_ctl_base;
if (!(l2c_ctl_val & V5_L2C_CTL_ENABLE_MASK))
l2c_ctl_val |= V5_L2C_CTL_ENABLE_MASK;
*l2c_ctl_base = l2c_ctl_val;
if (!cold_boot)
return 0;
fdt = sbi_scratch_thishart_arg1_ptr();
fdt_plic_fixup(fdt, "riscv,plic0");
return 0;
}
/* Get number of PMP regions for given HART. */
static u32 ae350_pmp_region_count(u32 hartid)
{
return 1;
}
/*
* Get PMP regions details (namely: protection, base address, and size) for
* a given HART.
*/
static int ae350_pmp_region_info(u32 hartid, u32 index, ulong *prot,
ulong *addr, ulong *log2size)
{
int ret = 0;
switch (index) {
case 0:
*prot = PMP_R | PMP_W | PMP_X;
*addr = 0;
*log2size = __riscv_xlen;
break;
default:
ret = -1;
break;
};
return ret;
}
/* Initialize the platform console. */
static int ae350_console_init(void)
{
return uart8250_init(AE350_UART_ADDR,
AE350_UART_FREQUENCY,
AE350_UART_BAUDRATE,
AE350_UART_REG_SHIFT,
AE350_UART_REG_WIDTH);
}
/* Initialize the platform interrupt controller for current HART. */
static int ae350_irqchip_init(bool cold_boot)
{
u32 hartid = current_hartid();
int ret;
if (cold_boot) {
ret = plic_cold_irqchip_init(AE350_PLIC_ADDR,
AE350_PLIC_NUM_SOURCES,
AE350_HART_COUNT);
if (ret)
return ret;
}
return plic_warm_irqchip_init(hartid, 2 * hartid, 2 * hartid + 1);
}
/* Initialize IPI for current HART. */
static int ae350_ipi_init(bool cold_boot)
{
int ret;
if (cold_boot) {
ret = plicsw_cold_ipi_init(AE350_PLICSW_ADDR,
AE350_HART_COUNT);
if (ret)
return ret;
}
return plicsw_warm_ipi_init();
}
/* Initialize platform timer for current HART. */
static int ae350_timer_init(bool cold_boot)
{
int ret;
if (cold_boot) {
ret = plmt_cold_timer_init(AE350_PLMT_ADDR,
AE350_HART_COUNT);
if (ret)
return ret;
}
return plmt_warm_timer_init();
}
/* Reboot the platform. */
static int ae350_system_reboot(u32 type)
{
/* For now nothing to do. */
sbi_printf("System reboot\n");
return 0;
}
/* Shutdown or poweroff the platform. */
static int ae350_system_shutdown(u32 type)
{
/* For now nothing to do. */
sbi_printf("System shutdown\n");
return 0;
}
/* Platform descriptor. */
const struct sbi_platform_operations platform_ops = {
.final_init = ae350_final_init,
.pmp_region_count = ae350_pmp_region_count,
.pmp_region_info = ae350_pmp_region_info,
.console_init = ae350_console_init,
.console_putc = uart8250_putc,
.console_getc = uart8250_getc,
.irqchip_init = ae350_irqchip_init,
.ipi_init = ae350_ipi_init,
.ipi_send = plicsw_ipi_send,
.ipi_clear = plicsw_ipi_clear,
.timer_init = ae350_timer_init,
.timer_value = plmt_timer_value,
.timer_event_start = plmt_timer_event_start,
.timer_event_stop = plmt_timer_event_stop,
.system_reboot = ae350_system_reboot,
.system_shutdown = ae350_system_shutdown
};
const struct sbi_platform platform = {
.opensbi_version = OPENSBI_VERSION,
.platform_version = SBI_PLATFORM_VERSION(0x0, 0x01),
.name = "Andes AE350",
.features = SBI_PLATFORM_DEFAULT_FEATURES,
.hart_count = AE350_HART_COUNT,
.hart_stack_size = SBI_PLATFORM_DEFAULT_HART_STACK_SIZE,
.platform_ops_addr = (unsigned long)&platform_ops
};
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