diff options
Diffstat (limited to 'zephyr/shim/chip/npcx/system_download_from_flash.c')
| -rw-r--r-- | zephyr/shim/chip/npcx/system_download_from_flash.c | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/zephyr/shim/chip/npcx/system_download_from_flash.c b/zephyr/shim/chip/npcx/system_download_from_flash.c deleted file mode 100644 index 28ec22962c..0000000000 --- a/zephyr/shim/chip/npcx/system_download_from_flash.c +++ /dev/null @@ -1,159 +0,0 @@ -/* Copyright 2021 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ -#include <dt-bindings/clock/npcx_clock.h> -#include <stdnoreturn.h> -#include <sys/__assert.h> - -#include "common.h" -#include "soc.h" -#include "system_chip.h" - -/* Modules Map */ -#define NPCX_PMC_BASE_ADDR 0x4000D000 -#define NPCX_GDMA_BASE_ADDR 0x40011000 - -/******************************************************************************/ -/* GDMA (General DMA) Registers */ -#define NPCX_GDMA_CTL REG32(NPCX_GDMA_BASE_ADDR + 0x000) -#define NPCX_GDMA_SRCB REG32(NPCX_GDMA_BASE_ADDR + 0x004) -#define NPCX_GDMA_DSTB REG32(NPCX_GDMA_BASE_ADDR + 0x008) -#define NPCX_GDMA_TCNT REG32(NPCX_GDMA_BASE_ADDR + 0x00C) - -/******************************************************************************/ -/* GDMA register fields */ -#define NPCX_GDMA_CTL_GDMAEN 0 -#define NPCX_GDMA_CTL_GDMAMS FIELD(2, 2) -#define NPCX_GDMA_CTL_DADIR 4 -#define NPCX_GDMA_CTL_SADIR 5 -#define NPCX_GDMA_CTL_SAFIX 7 -#define NPCX_GDMA_CTL_SIEN 8 -#define NPCX_GDMA_CTL_BME 9 -#define NPCX_GDMA_CTL_SBMS 11 -#define NPCX_GDMA_CTL_TWS FIELD(12, 2) -#define NPCX_GDMA_CTL_DM 15 -#define NPCX_GDMA_CTL_SOFTREQ 16 -#define NPCX_GDMA_CTL_TC 18 -#define NPCX_GDMA_CTL_GDMAERR 20 -#define NPCX_GDMA_CTL_BLOCK_BUG_CORRECTION_DISABLE 26 - -/******************************************************************************/ -/* Low Power RAM definitions */ -#define NPCX_LPRAM_CTRL REG32(0x40001044) - -/******************************************************************************/ -/* Sysjump utilities in low power ram for npcx series. */ -noreturn void __keep __attribute__ ((section(".lowpower_ram2"))) -__start_gdma(uint32_t exeAddr) -{ - /* Enable GDMA now */ - SET_BIT(NPCX_GDMA_CTL, NPCX_GDMA_CTL_GDMAEN); - - /* Start GDMA */ - SET_BIT(NPCX_GDMA_CTL, NPCX_GDMA_CTL_SOFTREQ); - - /* Wait for transfer to complete/fail */ - while (!IS_BIT_SET(NPCX_GDMA_CTL, NPCX_GDMA_CTL_TC) && - !IS_BIT_SET(NPCX_GDMA_CTL, NPCX_GDMA_CTL_GDMAERR)) - ; - - /* Disable GDMA now */ - CLEAR_BIT(NPCX_GDMA_CTL, NPCX_GDMA_CTL_GDMAEN); - - /* - * Failure occurs during GMDA transaction. Let watchdog issue and - * boot from RO region again. - */ - if (IS_BIT_SET(NPCX_GDMA_CTL, NPCX_GDMA_CTL_GDMAERR)) - while (1) - ; - - /* - * Jump to the exeAddr address if needed. Setting bit 0 of address to - * indicate it's a thumb branch for cortex-m series CPU. - */ - ((void (*)(void))(exeAddr | 0x01))(); - - /* Should never get here */ - while (1) - ; -} - -/* Begin address of Suspend RAM for little FW (GDMA utilities). */ -#define LFW_OFFSET 0x160 -uintptr_t __lpram_lfw_start = CONFIG_LPRAM_BASE + LFW_OFFSET; - -void system_download_from_flash(uint32_t srcAddr, uint32_t dstAddr, - uint32_t size, uint32_t exeAddr) -{ - int i; - uint8_t chunkSize = 16; /* 4 data burst mode. ie.16 bytes */ - /* - * GDMA utility in Suspend RAM. Setting bit 0 of address to indicate - * it's a thumb branch for cortex-m series CPU. - */ - void (*__start_gdma_in_lpram)(uint32_t) = - (void(*)(uint32_t))(__lpram_lfw_start | 0x01); - - /* - * Before enabling burst mode for better performance of GDMA, it's - * important to make sure srcAddr, dstAddr and size of transactions - * are 16 bytes aligned in case failure occurs. - */ - __ASSERT_NO_MSG((size % chunkSize) == 0 && (srcAddr % chunkSize) == 0 && - (dstAddr % chunkSize) == 0); - - /* Check valid address for jumpiing */ - __ASSERT_NO_MSG(exeAddr != 0x0); - - /* Enable power for the Low Power RAM */ - CLEAR_BIT(NPCX_PWDWN_CTL(NPCX_PMC_BASE_ADDR, NPCX_PWDWN_CTL6), 6); - - /* Enable Low Power RAM */ - NPCX_LPRAM_CTRL = 1; - - /* - * Initialize GDMA for flash reading. - * [31:21] - Reserved. - * [20] - GDMAERR = 0 (Indicate GMDA transfer error) - * [19] - Reserved. - * [18] - TC = 0 (Terminal Count. Indicate operation is end.) - * [17] - Reserved. - * [16] - SOFTREQ = 0 (Don't trigger here) - * [15] - DM = 0 (Set normal demand mode) - * [14] - Reserved. - * [13:12] - TWS. = 10 (One double-word for every GDMA transaction) - * [11:10] - Reserved. - * [9] - BME = 1 (4-data ie.16 bytes - Burst mode enable) - * [8] - SIEN = 0 (Stop interrupt disable) - * [7] - SAFIX = 0 (Fixed source address) - * [6] - Reserved. - * [5] - SADIR = 0 (Source address incremented) - * [4] - DADIR = 0 (Destination address incremented) - * [3:2] - GDMAMS = 00 (Software mode) - * [1] - Reserved. - * [0] - ENABLE = 0 (Don't enable yet) - */ - NPCX_GDMA_CTL = 0x00002200; - - /* Set source base address */ - NPCX_GDMA_SRCB = CONFIG_MAPPED_STORAGE_BASE + srcAddr; - - /* Set destination base address */ - NPCX_GDMA_DSTB = dstAddr; - - /* Set number of transfers */ - NPCX_GDMA_TCNT = (size / chunkSize); - - /* Clear Transfer Complete event */ - SET_BIT(NPCX_GDMA_CTL, NPCX_GDMA_CTL_TC); - - /* Copy the __start_gdma_in_lpram instructions to LPRAM */ - for (i = 0; i < &__flash_lplfw_end - &__flash_lplfw_start; i++) - *((uint32_t *)__lpram_lfw_start + i) = - *(&__flash_lplfw_start + i); - - /* Start GDMA in Suspend RAM */ - __start_gdma_in_lpram(exeAddr); -} |