mirror of
https://github.com/AsahiLinux/u-boot
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271 lines
6.7 KiB
C
271 lines
6.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) Marvell International Ltd. and its affiliates
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*/
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#include <common.h>
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#include <spl.h>
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#include <asm/io.h>
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#include <asm/arch/cpu.h>
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#include <asm/arch/soc.h>
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#include "seq_exec.h"
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#include "sys_env_lib.h"
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enum unit_id sys_env_soc_unit_nums[MAX_UNITS_ID][MAX_DEV_ID_NUM] = {
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/* 6820 6810 6811 6828 */
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/* PEX_UNIT_ID */ { 4, 3, 3, 4},
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/* ETH_GIG_UNIT_ID */ { 3, 2, 3, 3},
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/* USB3H_UNIT_ID */ { 2, 2, 2, 2},
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/* USB3D_UNIT_ID */ { 1, 1, 1, 1},
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/* SATA_UNIT_ID */ { 2, 2, 2, 4},
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/* QSGMII_UNIT_ID */ { 1, 0, 0, 1},
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/* XAUI_UNIT_ID */ { 0, 0, 0, 0},
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/* RXAUI_UNIT_ID */ { 0, 0, 0, 0}
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};
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u32 g_dev_id = -1;
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u32 mv_board_id_get(void)
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{
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#if defined(CONFIG_TARGET_DB_88F6820_GP)
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return DB_GP_68XX_ID;
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#else
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/*
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* Return 0 here for custom board as this should not be used
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* for custom boards.
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*/
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return 0;
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#endif
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}
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u32 mv_board_tclk_get(void)
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{
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u32 value;
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value = (reg_read(DEVICE_SAMPLE_AT_RESET1_REG) >> 15) & 0x1;
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switch (value) {
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case (0x0):
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return 250000000;
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case (0x1):
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return 200000000;
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default:
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return 0xffffffff;
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}
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}
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u32 mv_board_id_index_get(u32 board_id)
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{
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/*
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* Marvell Boards use 0x10 as base for Board ID:
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* mask MSB to receive index for board ID
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*/
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return board_id & (MARVELL_BOARD_ID_MASK - 1);
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}
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/*
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* sys_env_suspend_wakeup_check
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* DESCRIPTION: Reads GPIO input for suspend-wakeup indication.
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* INPUT: None.
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* OUTPUT:
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* RETURNS: u32 indicating suspend wakeup status:
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* 0 - Not supported,
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* 1 - supported: read magic word detect wakeup,
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* 2 - detected wakeup from GPIO.
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*/
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enum suspend_wakeup_status sys_env_suspend_wakeup_check(void)
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{
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u32 reg, board_id_index, gpio;
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struct board_wakeup_gpio board_gpio[] = MV_BOARD_WAKEUP_GPIO_INFO;
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board_id_index = mv_board_id_index_get(mv_board_id_get());
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if (!(sizeof(board_gpio) / sizeof(struct board_wakeup_gpio) >
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board_id_index)) {
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printf("\n_failed loading Suspend-Wakeup information (invalid board ID)\n");
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return SUSPEND_WAKEUP_DISABLED;
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}
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/*
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* - Detect if Suspend-Wakeup is supported on current board
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* - Fetch the GPIO number for wakeup status input indication
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*/
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if (board_gpio[board_id_index].gpio_num == -1) {
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/* Suspend to RAM is not supported */
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return SUSPEND_WAKEUP_DISABLED;
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} else if (board_gpio[board_id_index].gpio_num == -2) {
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/*
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* Suspend to RAM is supported but GPIO indication is
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* not implemented - Skip
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*/
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return SUSPEND_WAKEUP_ENABLED;
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} else {
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gpio = board_gpio[board_id_index].gpio_num;
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}
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/* Initialize MPP for GPIO (set MPP = 0x0) */
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reg = reg_read(MPP_CONTROL_REG(MPP_REG_NUM(gpio)));
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/* reset MPP21 to 0x0, keep rest of MPP settings*/
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reg &= ~MPP_MASK(gpio);
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reg_write(MPP_CONTROL_REG(MPP_REG_NUM(gpio)), reg);
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/* Initialize GPIO as input */
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reg = reg_read(GPP_DATA_OUT_EN_REG(GPP_REG_NUM(gpio)));
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reg |= GPP_MASK(gpio);
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reg_write(GPP_DATA_OUT_EN_REG(GPP_REG_NUM(gpio)), reg);
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/*
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* Check GPP for input status from PIC: 0 - regular init,
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* 1 - suspend wakeup
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*/
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reg = reg_read(GPP_DATA_IN_REG(GPP_REG_NUM(gpio)));
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/* if GPIO is ON: wakeup from S2RAM indication detected */
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return (reg & GPP_MASK(gpio)) ? SUSPEND_WAKEUP_ENABLED_GPIO_DETECTED :
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SUSPEND_WAKEUP_DISABLED;
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}
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/*
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* mv_ctrl_dev_id_index_get
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*
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* DESCRIPTION: return SOC device index
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* INPUT: None
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* OUTPUT: None
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* RETURN:
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* return SOC device index
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*/
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u32 sys_env_id_index_get(u32 ctrl_model)
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{
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switch (ctrl_model) {
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case MV_6820_DEV_ID:
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return MV_6820_INDEX;
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case MV_6810_DEV_ID:
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return MV_6810_INDEX;
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case MV_6811_DEV_ID:
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return MV_6811_INDEX;
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case MV_6828_DEV_ID:
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return MV_6828_INDEX;
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default:
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return MV_6820_INDEX;
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}
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}
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u32 sys_env_unit_max_num_get(enum unit_id unit)
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{
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u32 dev_id_index;
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if (unit >= MAX_UNITS_ID) {
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printf("%s: Error: Wrong unit type (%u)\n", __func__, unit);
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return 0;
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}
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dev_id_index = sys_env_id_index_get(sys_env_model_get());
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return sys_env_soc_unit_nums[unit][dev_id_index];
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}
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/*
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* sys_env_model_get
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* DESCRIPTION: Returns 16bit describing the device model (ID) as defined
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* in Vendor ID configuration register
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*/
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u16 sys_env_model_get(void)
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{
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u32 default_ctrl_id, ctrl_id = reg_read(DEV_ID_REG);
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ctrl_id = (ctrl_id & (DEV_ID_REG_DEVICE_ID_MASK)) >>
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DEV_ID_REG_DEVICE_ID_OFFS;
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switch (ctrl_id) {
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case MV_6820_DEV_ID:
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case MV_6810_DEV_ID:
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case MV_6811_DEV_ID:
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case MV_6828_DEV_ID:
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return ctrl_id;
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default:
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/* Device ID Default for A38x: 6820 */
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default_ctrl_id = MV_6820_DEV_ID;
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printf("%s: Error retrieving device ID (%x), using default ID = %x\n",
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__func__, ctrl_id, default_ctrl_id);
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return default_ctrl_id;
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}
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}
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/*
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* sys_env_device_id_get
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* DESCRIPTION: Returns enum (0..7) index of the device model (ID)
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*/
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u32 sys_env_device_id_get(void)
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{
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char *device_id_str[4] = {
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"6810", "6820", "6811", "6828",
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};
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if (g_dev_id != -1)
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return g_dev_id;
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g_dev_id = reg_read(DEVICE_SAMPLE_AT_RESET1_REG);
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g_dev_id = g_dev_id >> SAR_DEV_ID_OFFS & SAR_DEV_ID_MASK;
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printf("Detected Device ID %s\n", g_dev_id < 4 ? device_id_str[g_dev_id] : "NONE");
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return g_dev_id;
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}
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/*
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* sys_env_device_rev_get - Get Marvell controller device revision number
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*
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* DESCRIPTION:
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* This function returns 8bit describing the device revision as defined
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* Revision ID Register.
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*
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* INPUT:
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* None.
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*
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* OUTPUT:
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* None.
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*
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* RETURN:
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* 8bit desscribing Marvell controller revision number
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*/
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u8 sys_env_device_rev_get(void)
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{
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u32 value;
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value = reg_read(DEV_VERSION_ID_REG);
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return (value & (REVISON_ID_MASK)) >> REVISON_ID_OFFS;
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}
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void mv_rtc_config(void)
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{
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u32 i, val;
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/* Activate pipe0 for read/write transaction, and set XBAR client number #1 */
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val = 0x1 << DFX_PIPE_SELECT_PIPE0_ACTIVE_OFFS |
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0x1 << DFX_PIPE_SELECT_XBAR_CLIENT_SEL_OFFS;
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writel(val, MVEBU_DFX_BASE);
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/* Set new RTC value for all memory wrappers */
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for (i = 0; i < RTC_MEMORY_WRAPPER_COUNT; i++)
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reg_write(RTC_MEMORY_WRAPPER_REG(i), RTC_MEMORY_WRAPPER_CTRL_VAL);
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}
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void mv_avs_init(void)
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{
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u32 sar_freq;
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reg_write(AVS_DEBUG_CNTR_REG, AVS_DEBUG_CNTR_DEFAULT_VALUE);
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reg_write(AVS_DEBUG_CNTR_REG, AVS_DEBUG_CNTR_DEFAULT_VALUE);
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sar_freq = reg_read(DEVICE_SAMPLE_AT_RESET1_REG);
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sar_freq = sar_freq >> SAR_FREQ_OFFSET & SAR_FREQ_MASK;
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/* Set AVS value only for core frequency of 1600MHz or less.
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* For higher frequency leave the default value.
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*/
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if (sar_freq <= 0xd) {
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u32 avs_reg_data = reg_read(AVS_ENABLED_CONTROL);
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avs_reg_data &= ~(AVS_LOW_VDD_LIMIT_MASK
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| AVS_HIGH_VDD_LIMIT_MASK);
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avs_reg_data |= AVS_LOW_VDD_SLOW_VAL | AVS_HIGH_VDD_SLOW_VAL;
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reg_write(AVS_ENABLED_CONTROL, avs_reg_data);
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}
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}
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