| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <assert.h> |
| #include <console/console.h> |
| #include <delay.h> |
| #include <soc/mcu_common.h> |
| #include <soc/spm.h> |
| #include <soc/symbols.h> |
| #include <string.h> |
| #include <timer.h> |
| |
| #define SPMFW_HEADER_SIZE 16 |
| |
| __weak void spm_extern_initialize(void) { /* do nothing */ } |
| |
| static void spm_set_sysclk_settle(void) |
| { |
| write32(&mtk_spm->spm_clk_settle, SPM_SYSCLK_SETTLE); |
| } |
| |
| static void spm_kick_im_to_fetch(const struct dyna_load_pcm *pcm) |
| { |
| uintptr_t ptr; |
| u32 dmem_words; |
| u32 pmem_words; |
| u32 total_words; |
| u32 pmem_start; |
| u32 dmem_start; |
| |
| ptr = (uintptr_t)pcm->buf + SPM_SYSTEM_BASE_OFFSET; |
| pmem_words = pcm->desc.pmem_words; |
| total_words = pcm->desc.total_words; |
| dmem_words = total_words - pmem_words; |
| pmem_start = pcm->desc.pmem_start; |
| dmem_start = pcm->desc.dmem_start; |
| |
| printk(BIOS_DEBUG, "%s: ptr = %#lx, pmem/dmem words = %#x/%#x\n", |
| __func__, (long)ptr, pmem_words, dmem_words); |
| |
| /* DMA needs 16-byte aligned source data. */ |
| assert(ptr % 16 == 0); |
| |
| write32(&mtk_spm->md32pcm_dma0_src, ptr); |
| write32(&mtk_spm->md32pcm_dma0_dst, pmem_start); |
| write32(&mtk_spm->md32pcm_dma0_wppt, pmem_words); |
| write32(&mtk_spm->md32pcm_dma0_wpto, dmem_start); |
| write32(&mtk_spm->md32pcm_dma0_count, total_words); |
| write32(&mtk_spm->md32pcm_dma0_con, MD32PCM_DMA0_CON_VAL); |
| write32(&mtk_spm->md32pcm_dma0_start, MD32PCM_DMA0_START_VAL); |
| |
| setbits32(&mtk_spm->pcm_con0, SPM_REGWR_CFG_KEY | PCM_CK_EN_LSB); |
| } |
| |
| static void spm_init_pcm_register(void) |
| { |
| /* Init r0 with POWER_ON_VAL0 */ |
| write32(&mtk_spm->pcm_reg_data_ini, |
| read32(&mtk_spm->spm_power_on_val0)); |
| write32(&mtk_spm->pcm_pwr_io_en, PCM_RF_SYNC_R0); |
| write32(&mtk_spm->pcm_pwr_io_en, 0); |
| |
| /* Init r7 with POWER_ON_VAL1 */ |
| write32(&mtk_spm->pcm_reg_data_ini, |
| read32(&mtk_spm->spm_power_on_val1)); |
| write32(&mtk_spm->pcm_pwr_io_en, PCM_RF_SYNC_R7); |
| write32(&mtk_spm->pcm_pwr_io_en, 0); |
| } |
| |
| static void spm_set_pcm_flags(const struct pwr_ctrl *pwrctrl) |
| { |
| u32 pcm_flags = pwrctrl->pcm_flags, pcm_flags1 = pwrctrl->pcm_flags1; |
| |
| /* Set PCM flags and data */ |
| if (pwrctrl->pcm_flags_cust_clr != 0) |
| pcm_flags &= ~pwrctrl->pcm_flags_cust_clr; |
| if (pwrctrl->pcm_flags_cust_set != 0) |
| pcm_flags |= pwrctrl->pcm_flags_cust_set; |
| if (pwrctrl->pcm_flags1_cust_clr != 0) |
| pcm_flags1 &= ~pwrctrl->pcm_flags1_cust_clr; |
| if (pwrctrl->pcm_flags1_cust_set != 0) |
| pcm_flags1 |= pwrctrl->pcm_flags1_cust_set; |
| |
| write32(&mtk_spm->spm_sw_flag_0, pcm_flags); |
| write32(&mtk_spm->spm_sw_flag_1, pcm_flags1); |
| write32(&mtk_spm->spm_sw_rsv_7, pcm_flags); |
| write32(&mtk_spm->spm_sw_rsv_8, pcm_flags1); |
| } |
| |
| static void spm_kick_pcm_to_run(const struct pwr_ctrl *pwrctrl) |
| { |
| /* Waiting for loading SPMFW done*/ |
| while (read32(&mtk_spm->md32pcm_dma0_rlct) != 0x0) |
| ; |
| |
| /* Init register to match PCM expectation */ |
| write32(&mtk_spm->spm_bus_protect_mask_b, SPM_BUS_PROTECT_MASK_B_DEF); |
| write32(&mtk_spm->spm_bus_protect2_mask_b, |
| SPM_BUS_PROTECT2_MASK_B_DEF); |
| write32(&mtk_spm->pcm_reg_data_ini, 0); |
| |
| spm_set_pcm_flags(pwrctrl); |
| |
| /* Kick PCM to run (only toggle PCM_KICK) */ |
| setbits32(&mtk_spm->pcm_con0, SPM_REGWR_CFG_KEY | PCM_CK_EN_LSB); |
| |
| /* Reset md32pcm */ |
| SET32_BITFIELDS(&mtk_spm->md32pcm_cfgreg_sw_rstn, |
| MD32PCM_CFGREG_SW_RSTN_RESET, 1); |
| |
| /* Waiting for SPM init done */ |
| udelay(SPM_INIT_DONE_US); |
| } |
| |
| static void spm_parse_firmware(struct mtk_mcu *mcu) |
| { |
| size_t file_size, copy_size; |
| int offset; |
| u16 firmware_size; |
| |
| struct dyna_load_pcm *pcm = (struct dyna_load_pcm *)mcu->priv; |
| file_size = mcu->run_size; |
| |
| /* |
| * spmfw layout: |
| * u16 firmware_size |
| * u32 binary[firmware_size] |
| * struct pcm_desc descriptor |
| * char *version |
| */ |
| |
| /* Firmware size */ |
| offset = 0; |
| copy_size = sizeof(firmware_size); |
| memcpy(&firmware_size, mcu->load_buffer + offset, copy_size); |
| printk(BIOS_DEBUG, "SPM: binary array size = %#x\n", firmware_size); |
| |
| /* Binary */ |
| offset = SPMFW_HEADER_SIZE; /* binary start offset */ |
| copy_size = firmware_size * sizeof(u32); |
| assert(offset < file_size); |
| pcm->buf = (u8 *)(mcu->load_buffer + offset); |
| |
| /* Descriptor */ |
| offset += copy_size; |
| assert(offset < file_size); |
| copy_size = sizeof(pcm->desc); |
| memcpy(&pcm->desc, mcu->load_buffer + offset, copy_size); |
| |
| /* Firmware size and total words need to be the same */ |
| assert(firmware_size == pcm->desc.total_words); |
| |
| /* Version */ |
| offset += copy_size; |
| assert(offset < file_size); |
| printk(BIOS_INFO, "SPM: spmfw (version %.*s)\n", |
| (int)(file_size - offset), |
| (u8 *)mcu->load_buffer + offset); |
| } |
| |
| static void reset_spm(struct mtk_mcu *mcu) |
| { |
| struct dyna_load_pcm *pcm = (struct dyna_load_pcm *)mcu->priv; |
| const struct pwr_ctrl *spm_init_ctrl = get_pwr_ctrl(); |
| |
| spm_parse_firmware(mcu); |
| spm_reset_and_init_pcm(); |
| spm_kick_im_to_fetch(pcm); |
| spm_init_pcm_register(); |
| spm_set_wakeup_event(spm_init_ctrl); |
| spm_kick_pcm_to_run(spm_init_ctrl); |
| } |
| |
| static struct mtk_mcu spm = { |
| .firmware_name = CONFIG_SPM_FIRMWARE, |
| .reset = reset_spm, |
| }; |
| |
| void spm_code_swapping(void) |
| { |
| u32 mask; |
| |
| mask = read32(&mtk_spm->spm_wakeup_event_mask); |
| write32(&mtk_spm->spm_wakeup_event_mask, |
| mask & ~SPM_WAKEUP_EVENT_MASK_BIT0); |
| write32(&mtk_spm->spm_cpu_wakeup_event, 1); |
| write32(&mtk_spm->spm_cpu_wakeup_event, 0); |
| write32(&mtk_spm->spm_wakeup_event_mask, mask); |
| } |
| |
| int spm_init(void) |
| { |
| struct dyna_load_pcm pcm; |
| struct stopwatch sw; |
| const struct pwr_ctrl *spm_init_ctrl = get_pwr_ctrl(); |
| |
| stopwatch_init(&sw); |
| |
| spm_register_init(); |
| spm_set_power_control(spm_init_ctrl); |
| spm_set_sysclk_settle(); |
| spm_extern_initialize(); |
| |
| spm.load_buffer = _dram_dma; |
| spm.buffer_size = REGION_SIZE(dram_dma); |
| spm.priv = (void *)&pcm; |
| |
| if (mtk_init_mcu(&spm)) { |
| printk(BIOS_ERR, "SPM: %s: failed in mtk_init_mcu\n", __func__); |
| return -1; |
| } |
| |
| printk(BIOS_INFO, "SPM: %s done in %lld msecs, spm pc = %#x\n", |
| __func__, stopwatch_duration_msecs(&sw), |
| read32(&mtk_spm->md32pcm_pc)); |
| |
| return 0; |
| } |