119 lines
2.7 KiB
C
119 lines
2.7 KiB
C
/*
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* Copyright (c) 2019 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <device.h>
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#include <init.h>
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#include <platform/ipc.h>
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#include <platform/mailbox.h>
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#include <platform/shim.h>
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#include "soc.h"
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static const struct adsp_ipc_fw_ready fw_ready_apl
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__attribute__((section(".fw_ready"))) __attribute__((used)) = {
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.hdr = {
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.cmd = ADSP_IPC_FW_READY,
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.size = sizeof(struct adsp_ipc_fw_ready),
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},
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.version = {
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.hdr.size = sizeof(struct adsp_ipc_fw_version),
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.micro = 0,
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.minor = 1,
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.major = 0,
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.build = 0,
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.date = __DATE__,
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.time = __TIME__,
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.tag = "zephyr",
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.abi_version = 0,
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},
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.flags = 0,
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};
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#define NUM_WINDOWS 2
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static const struct adsp_ipc_window sram_window = {
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.ext_hdr = {
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.hdr.cmd = ADSP_IPC_FW_READY,
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.hdr.size = sizeof(struct adsp_ipc_window) +
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sizeof(struct adsp_ipc_window_elem) * NUM_WINDOWS,
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.type = ADSP_IPC_EXT_WINDOW,
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},
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.num_windows = NUM_WINDOWS,
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.window = {
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{
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.type = ADSP_IPC_REGION_REGS,
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.id = 0, /* map to host window 0 */
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.flags = 0,
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.size = MAILBOX_SW_REG_SIZE,
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.offset = 0,
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},
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{
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.type = ADSP_IPC_REGION_TRACE,
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.id = 3, /* map to host window 3 */
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.flags = 0,
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.size = MAILBOX_TRACE_SIZE,
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.offset = 0,
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},
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},
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};
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/*
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* Sets up the host windows so that the host can see the memory
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* content on the DSP SRAM.
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*/
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static void prepare_host_windows(void)
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{
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/* window0, for fw status */
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sys_write32((HP_SRAM_WIN0_SIZE | 0x7), DMWLO(0));
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sys_write32((HP_SRAM_WIN0_BASE | DMWBA_READONLY | DMWBA_ENABLE),
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DMWBA(0));
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memset((void *)(HP_SRAM_WIN0_BASE + SRAM_REG_FW_END), 0,
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HP_SRAM_WIN0_SIZE - SRAM_REG_FW_END);
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SOC_DCACHE_FLUSH((void *)(HP_SRAM_WIN0_BASE + SRAM_REG_FW_END),
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HP_SRAM_WIN0_SIZE - SRAM_REG_FW_END);
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/* window3, for trace
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* zeroed by trace initialization
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*/
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sys_write32((HP_SRAM_WIN3_SIZE | 0x7), DMWLO(3));
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sys_write32((HP_SRAM_WIN3_BASE | DMWBA_READONLY | DMWBA_ENABLE),
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DMWBA(3));
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memset((void *)HP_SRAM_WIN3_BASE, 0, HP_SRAM_WIN3_SIZE);
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SOC_DCACHE_FLUSH((void *)HP_SRAM_WIN3_BASE, HP_SRAM_WIN3_SIZE);
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}
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/*
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* Sends the firmware ready message so the firmware loader can
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* map the host windows.
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*/
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static void send_fw_ready(void)
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{
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memcpy((void *)MAILBOX_DSPBOX_BASE,
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&fw_ready_apl, sizeof(fw_ready_apl));
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memcpy((void *)(MAILBOX_DSPBOX_BASE + sizeof(fw_ready_apl)),
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&sram_window, sizeof(sram_window));
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SOC_DCACHE_FLUSH((void *)MAILBOX_DSPBOX_BASE, MAILBOX_DSPBOX_SIZE);
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ipc_write(IPC_DIPCIE, 0);
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ipc_write(IPC_DIPCI, (0x80000000 | ADSP_IPC_FW_READY));
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}
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static int adsp_init(struct device *dev)
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{
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prepare_host_windows();
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send_fw_ready();
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return 0;
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}
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SYS_INIT(adsp_init, APPLICATION, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
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