diff options
Diffstat (limited to 'meta-openbmc-mods/meta-ast2600/recipes-bsp/u-boot/files/0011-KCS-driver-support-in-uBoot.patch')
| -rw-r--r-- | meta-openbmc-mods/meta-ast2600/recipes-bsp/u-boot/files/0011-KCS-driver-support-in-uBoot.patch | 614 |
1 files changed, 614 insertions, 0 deletions
diff --git a/meta-openbmc-mods/meta-ast2600/recipes-bsp/u-boot/files/0011-KCS-driver-support-in-uBoot.patch b/meta-openbmc-mods/meta-ast2600/recipes-bsp/u-boot/files/0011-KCS-driver-support-in-uBoot.patch new file mode 100644 index 000000000..f446d797a --- /dev/null +++ b/meta-openbmc-mods/meta-ast2600/recipes-bsp/u-boot/files/0011-KCS-driver-support-in-uBoot.patch @@ -0,0 +1,614 @@ +From 1fbd857e2ff5396ea057f686cbd01c6db4328316 Mon Sep 17 00:00:00 2001 +From: AppaRao Puli <apparao.puli@linux.intel.com> +Date: Mon, 20 Apr 2020 11:08:22 -0700 +Subject: [PATCH] KCS driver support in uBoot + +Added KCS support in uBoot. This will enable +KCS channels and set the specified registers +to do KCS communication in uBoot. It also +consist of read and write KCS message transations +work flow implementation( As specified in IPMI +specification Section 9.15). It is enabled +only when Force Firmware Update Jumper is ON. + +Tested: +Stopped booting in uBoot and sent IPMI commands +via KCS interfaces using cmdtool.efi. + - Get Device ID: + Req: cmdtool.efi 20 18 1 + Res: 00 23 00 12 03 02 BF 57 01 00 7B 00 00 00 00 00 + - Get Self Test Results + Req: cmdtool.efi 20 18 4 + Res: 00 56 00 + - All other commands + Req: cmdtool.efi 20 18 2 + Res: C1 (Invalid). + +Signed-off-by: AppaRao Puli <apparao.puli@linux.intel.com> +Signed-off-by: James Feist <james.feist@linux.intel.com> +Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com> +--- + board/aspeed/ast2600_intel/Makefile | 1 + + board/aspeed/ast2600_intel/ast-kcs.c | 418 +++++++++++++++++++++++++++++++++++ + board/aspeed/ast2600_intel/ast-kcs.h | 112 ++++++++++ + board/aspeed/ast2600_intel/intel.c | 4 + + 4 files changed, 535 insertions(+) + create mode 100644 board/aspeed/ast2600_intel/ast-kcs.c + create mode 100644 board/aspeed/ast2600_intel/ast-kcs.h + +diff --git a/board/aspeed/ast2600_intel/Makefile b/board/aspeed/ast2600_intel/Makefile +index 37d2f0064f38..d049922719f3 100644 +--- a/board/aspeed/ast2600_intel/Makefile ++++ b/board/aspeed/ast2600_intel/Makefile +@@ -2,3 +2,4 @@ obj-y += intel.o + obj-y += ast-espi.o + obj-y += ast-irq.o + obj-y += ast-timer.o ++obj-y += ast-kcs.o +diff --git a/board/aspeed/ast2600_intel/ast-kcs.c b/board/aspeed/ast2600_intel/ast-kcs.c +new file mode 100644 +index 000000000000..a03b7e725370 +--- /dev/null ++++ b/board/aspeed/ast2600_intel/ast-kcs.c +@@ -0,0 +1,418 @@ ++// SPDX-License-Identifier: GPL-2.0 ++// Copyright (c) 2018-2020 Intel Corporation ++ ++#include "ast-kcs.h" ++ ++#ifdef DEBUG_KCS_ENABLED ++#define DBG_KCS printf ++#else ++#define DBG_KCS(...) ++#endif ++ ++/* TODO: Move to IPMI file. */ ++#define IPMI_CC_OK 0x00 ++#define IPMI_CC_INVALID 0xC1 ++#define IPMI_CC_UNSPECIFIED 0xFF ++ ++#define KCS_CHANNEL_NO_3 3 ++ ++static const u16 enabled_kcs_channel[] = { KCS_CHANNEL_NO_3 }; ++ ++static const struct kcs_io_reg ast_kcs_bmc_ioregs[KCS_CHANNEL_MAX] = { ++ { .idr = LPC_IDR1, .odr = LPC_ODR1, .str = LPC_STR1 }, ++ { .idr = LPC_IDR2, .odr = LPC_ODR2, .str = LPC_STR2 }, ++ { .idr = LPC_IDR3, .odr = LPC_ODR3, .str = LPC_STR3 }, ++ { .idr = LPC_IDR4, .odr = LPC_ODR4, .str = LPC_STR4 } ++}; ++ ++#define NO_OF_ENABLED_KCS_CHANNELS ARRAY_SIZE(enabled_kcs_channel) ++ ++static struct kcs_packet m_kcs_pkt[NO_OF_ENABLED_KCS_CHANNELS]; ++ ++static u16 read_status(u16 channel_num) ++{ ++ return readl(AST_LPC_BASE + ast_kcs_bmc_ioregs[channel_num - 1].str); ++} ++ ++static void write_status(u16 channel_num, u16 value) ++{ ++ writel(value, AST_LPC_BASE + ast_kcs_bmc_ioregs[channel_num - 1].str); ++} ++ ++static u16 read_data(u16 channel_num) ++{ ++ return readl(AST_LPC_BASE + ast_kcs_bmc_ioregs[channel_num - 1].idr); ++} ++ ++static void write_data(u16 channel_num, u16 value) ++{ ++ writel(value, AST_LPC_BASE + ast_kcs_bmc_ioregs[channel_num - 1].odr); ++} ++ ++static void set_kcs_state(u16 channel_num, u16 state) ++{ ++ u16 status = read_status(channel_num); ++ ++ status &= ~KCS_STATE_MASK; ++ status |= KCS_STATE(state) & KCS_STATE_MASK; ++ write_status(channel_num, status); ++} ++ ++static struct kcs_packet *get_kcs_packet(u16 channel_num) ++{ ++ for (u16 idx = 0; idx < NO_OF_ENABLED_KCS_CHANNELS; idx++) { ++ if (channel_num == enabled_kcs_channel[idx]) ++ return &m_kcs_pkt[idx]; ++ } ++ ++ /* very unlike code hits here. */ ++ DBG_KCS("ERROR: %s error. ChannelNo: %d\n", __func__, channel_num); ++ BUG(); ++} ++ ++static void kcs_force_abort(u16 channel_num) ++{ ++ struct kcs_packet *kcs_pkt = NULL; ++ ++ kcs_pkt = get_kcs_packet(channel_num); ++ DBG_KCS("ERROR: KCS communication aborted (Channel:%d, Error:%d)\n", ++ channel_num, kcs_pkt->error); ++ set_kcs_state(channel_num, KCS_STATE_ERROR); ++ read_data(channel_num); ++ write_data(channel_num, ZERO_DATA); ++ ++ kcs_pkt->phase = KCS_PHASE_ERROR; ++ kcs_pkt->read_req_done = false; ++ kcs_pkt->data_in_idx = 0; ++} ++ ++static void init_kcs_packet(u16 channel_num) ++{ ++ struct kcs_packet *kcs_pkt = NULL; ++ ++ kcs_pkt = get_kcs_packet(channel_num); ++ kcs_pkt->channel = channel_num; ++ kcs_pkt->read_req_done = false; ++ kcs_pkt->phase = KCS_PHASE_IDLE; ++ kcs_pkt->error = KCS_NO_ERROR; ++ kcs_pkt->data_in_idx = 0; ++ kcs_pkt->data_out_idx = 0; ++ kcs_pkt->data_out_len = 0; ++} ++ ++static void process_kcs_request(u16 channel_num) ++{ ++ struct kcs_packet *kcs_pkt = NULL; ++ int i; ++ ++ kcs_pkt = get_kcs_packet(channel_num); ++ if (!kcs_pkt->read_req_done) ++ return; ++ ++ DBG_KCS("%s:- chan:%d\n", __func__, channel_num); ++ ++#ifdef DEBUG_KCS_ENABLED ++ DBG_KCS("Request data(Len:%d): ", kcs_pkt->data_in_idx); ++ for (i = 0; i < kcs_pkt->data_in_idx; i++) ++ DBG_KCS(" 0x%02x", kcs_pkt->data_in[i]); ++ DBG_KCS("\n"); ++#endif ++ ++ /* ++ * TODO: Move it to IPMI Command Handler ++ * Below code is added for timebeing till ++ * we implement the IPMI command handler. ++ */ ++ kcs_pkt->data_out[0] = kcs_pkt->data_in[0]; /* netfn */ ++ kcs_pkt->data_out[1] = kcs_pkt->data_in[1]; /* cmd */ ++ kcs_pkt->data_out[2] = IPMI_CC_OK; /* cc */ ++ ++ if (((kcs_pkt->data_in[0] >> 2) == 0x06) && ++ (kcs_pkt->data_in[1] == 0x01)) { ++ /* Get Device ID */ ++ u8 device_id[15] = { 0x23, 0x00, 0x12, 0x03, 0x02, ++ 0xBF, 0x57, 0x01, 0x00, 0x7B, ++ 0x00, 0x00, 0x00, 0x00, 0x00 }; ++ for (i = 0; i < 15; i++) ++ kcs_pkt->data_out[i + 3] = device_id[i]; ++ kcs_pkt->data_out_len = 18; ++ } else if (((kcs_pkt->data_in[0] >> 2) == 0x06) && ++ (kcs_pkt->data_in[1] == 0x04)) { ++ /* Get Self Test Results */ ++ kcs_pkt->data_out[3] = 0x56; ++ kcs_pkt->data_out[4] = 0x00; ++ kcs_pkt->data_out_len = 5; ++ } else { ++ kcs_pkt->data_out[2] = ++ IPMI_CC_INVALID; /* Invalid or not supported. */ ++ kcs_pkt->data_out_len = 3; ++ } ++ /* END: TODO */ ++ ++#ifdef DEBUG_KCS_ENABLED ++ DBG_KCS("Response data(Len:%d): ", kcs_pkt->data_out_len); ++ for (i = 0; i < kcs_pkt->data_out_len; i++) ++ DBG_KCS(" 0x%02x", kcs_pkt->data_out[i]); ++ DBG_KCS("\n"); ++#endif ++ ++ kcs_pkt->phase = KCS_PHASE_READ; ++ write_data(channel_num, kcs_pkt->data_out[kcs_pkt->data_out_idx++]); ++ kcs_pkt->read_req_done = false; ++} ++ ++static void read_kcs_data(u16 channel_num) ++{ ++ struct kcs_packet *kcs_pkt = NULL; ++ ++ kcs_pkt = get_kcs_packet(channel_num); ++ ++ switch (kcs_pkt->phase) { ++ case KCS_PHASE_WRITE_START: ++ kcs_pkt->phase = KCS_PHASE_WRITE_DATA; ++ /* fall through */ ++ ++ case KCS_PHASE_WRITE_DATA: ++ if (kcs_pkt->data_in_idx >= MAX_KCS_PKT_SIZE) { ++ kcs_pkt->error = KCS_LENGTH_ERROR; ++ kcs_force_abort(channel_num); ++ return; ++ } ++ set_kcs_state(channel_num, KCS_STATE_WRITE); ++ write_data(channel_num, ZERO_DATA); ++ kcs_pkt->data_in[kcs_pkt->data_in_idx++] = ++ read_data(channel_num); ++ break; ++ ++ case KCS_PHASE_WRITE_END: ++ if (kcs_pkt->data_in_idx >= MAX_KCS_PKT_SIZE) { ++ kcs_pkt->error = KCS_LENGTH_ERROR; ++ kcs_force_abort(channel_num); ++ return; ++ } ++ set_kcs_state(channel_num, KCS_STATE_READ); ++ kcs_pkt->data_in[kcs_pkt->data_in_idx++] = ++ read_data(channel_num); ++ kcs_pkt->phase = KCS_PHASE_READ_WAIT; ++ kcs_pkt->read_req_done = true; ++ ++ process_kcs_request(channel_num); ++ break; ++ ++ case KCS_PHASE_READ: ++ if (kcs_pkt->data_out_idx == kcs_pkt->data_out_len) ++ set_kcs_state(channel_num, KCS_STATE_IDLE); ++ ++ u8 data = read_data(channel_num); ++ if (data != KCS_CTRL_CODE_READ) { ++ DBG_KCS("Invalid Read data. Phase:%d, Data:0x%02x\n", ++ kcs_pkt->phase, data); ++ set_kcs_state(channel_num, KCS_STATE_ERROR); ++ write_data(channel_num, ZERO_DATA); ++ break; ++ } ++ ++ if (kcs_pkt->data_out_idx == kcs_pkt->data_out_len) { ++ write_data(channel_num, ZERO_DATA); ++ kcs_pkt->phase = KCS_PHASE_IDLE; ++ break; ++ } ++ write_data(channel_num, ++ kcs_pkt->data_out[kcs_pkt->data_out_idx++]); ++ break; ++ ++ case KCS_PHASE_ABORT_1: ++ set_kcs_state(channel_num, KCS_STATE_READ); ++ read_data(channel_num); ++ write_data(channel_num, kcs_pkt->error); ++ kcs_pkt->phase = KCS_PHASE_ABORT_2; ++ break; ++ ++ case KCS_PHASE_ABORT_2: ++ set_kcs_state(channel_num, KCS_STATE_IDLE); ++ read_data(channel_num); ++ write_data(channel_num, ZERO_DATA); ++ kcs_pkt->phase = KCS_PHASE_IDLE; ++ break; ++ ++ default: ++ kcs_force_abort(channel_num); ++ } ++} ++ ++static void read_kcs_cmd(u16 channel_num) ++{ ++ struct kcs_packet *kcs_pkt = NULL; ++ ++ kcs_pkt = get_kcs_packet(channel_num); ++ ++ set_kcs_state(channel_num, KCS_STATE_WRITE); ++ write_data(channel_num, ZERO_DATA); ++ ++ u16 cmd = read_data(channel_num); ++ switch (cmd) { ++ case KCS_CTRL_CODE_WRITE_START: ++ init_kcs_packet(channel_num); ++ kcs_pkt->phase = KCS_PHASE_WRITE_START; ++ break; ++ ++ case KCS_CTRL_CODE_WRITE_END: ++ if (kcs_pkt->error != KCS_NO_ERROR) { ++ kcs_force_abort(channel_num); ++ return; ++ } ++ ++ kcs_pkt->phase = KCS_PHASE_WRITE_END; ++ break; ++ ++ case KCS_CTRL_CODE_GET_STATUS_ABORT: ++ kcs_pkt->phase = KCS_PHASE_ABORT_1; ++ kcs_pkt->error = KCS_ABORT_BY_CMD; ++ break; ++ ++ default: ++ kcs_pkt->error = KCS_ILLEGAL_CTRL_CMD; ++ kcs_force_abort(channel_num); ++ } ++} ++ ++static void kcs_irq_handler(void *cookie) ++{ ++ u32 channel_num = (u32)cookie; ++ /* Look-up the interrupted KCS channel */ ++ u16 status = read_status(channel_num); ++ if (status & BIT_STATUS_IBF) { ++ if (status & BIT_STATUS_COD) ++ read_kcs_cmd(channel_num); ++ else ++ read_kcs_data(channel_num); ++ } ++ ++ DBG_KCS("%s: chan_no: %d\n", __FUNC__, channel_num); ++} ++ ++static void set_kcs_channel_addr(u16 channel_num) ++{ ++ u32 val; ++ ++ switch (channel_num) { ++ case 1: ++ val = readl(AST_LPC_BASE + LPC_HICR4) & ~BIT_LADR12AS; ++ writel(val, AST_LPC_BASE + LPC_HICR4); ++ val = (KCS_CHANNEL1_ADDR >> 8); ++ writel(val, AST_LPC_BASE + LPC_LADR12H); ++ val = (KCS_CHANNEL1_ADDR & 0xFF); ++ writel(val, AST_LPC_BASE + LPC_LADR12L); ++ break; ++ ++ case 2: ++ val = readl(AST_LPC_BASE + LPC_HICR4) | BIT_LADR12AS; ++ writel(val, AST_LPC_BASE + LPC_HICR4); ++ val = (KCS_CHANNEL2_ADDR >> 8); ++ writel(val, AST_LPC_BASE + LPC_LADR12H); ++ val = (KCS_CHANNEL2_ADDR & 0xFF); ++ writel(val, AST_LPC_BASE + LPC_LADR12L); ++ break; ++ ++ case 3: ++ val = (KCS_CHANNEL3_ADDR >> 8); ++ writel(val, AST_LPC_BASE + LPC_LADR3H); ++ val = (KCS_CHANNEL3_ADDR & 0xFF); ++ writel(val, AST_LPC_BASE + LPC_LADR3L); ++ break; ++ ++ case 4: ++ val = (((KCS_CHANNEL4_ADDR + 1) << 16) | KCS_CHANNEL4_ADDR); ++ writel(val, AST_LPC_BASE + LPC_LADR4); ++ break; ++ ++ default: ++ DBG_KCS("Invalid channel (%d) specified\n", channel_num); ++ break; ++ } ++} ++ ++static void enable_kcs_channel(u16 channel_num, u16 enable) ++{ ++ u32 val; ++ ++ switch (channel_num) { ++ case 1: ++ if (enable) { ++ val = readl(AST_LPC_BASE + LPC_HICR2) | BIT_IBFIE1; ++ writel(val, AST_LPC_BASE + LPC_HICR2); ++ val = readl(AST_LPC_BASE + LPC_HICR0) | BIT_LPC1E; ++ writel(val, AST_LPC_BASE + LPC_HICR0); ++ } else { ++ val = readl(AST_LPC_BASE + LPC_HICR0) & ~BIT_LPC1E; ++ writel(val, AST_LPC_BASE + LPC_HICR0); ++ val = readl(AST_LPC_BASE + LPC_HICR2) & ~BIT_IBFIE1; ++ writel(val, AST_LPC_BASE + LPC_HICR2); ++ } ++ break; ++ ++ case 2: ++ if (enable) { ++ val = readl(AST_LPC_BASE + LPC_HICR2) | BIT_IBFIE2; ++ writel(val, AST_LPC_BASE + LPC_HICR2); ++ val = readl(AST_LPC_BASE + LPC_HICR0) | BIT_LPC2E; ++ writel(val, AST_LPC_BASE + LPC_HICR0); ++ } else { ++ val = readl(AST_LPC_BASE + LPC_HICR0) & ~BIT_LPC2E; ++ writel(val, AST_LPC_BASE + LPC_HICR0); ++ val = readl(AST_LPC_BASE + LPC_HICR2) & ~BIT_IBFIE2; ++ writel(val, AST_LPC_BASE + LPC_HICR2); ++ } ++ break; ++ ++ case 3: ++ if (enable) { ++ val = readl(AST_LPC_BASE + LPC_HICR2) | BIT_IBFIE3; ++ writel(val, AST_LPC_BASE + LPC_HICR2); ++ val = readl(AST_LPC_BASE + LPC_HICR0) | BIT_LPC3E; ++ writel(val, AST_LPC_BASE + LPC_HICR0); ++ val = readl(AST_LPC_BASE + LPC_HICR4) | BIT_KCSENBL; ++ writel(val, AST_LPC_BASE + LPC_HICR4); ++ } else { ++ val = readl(AST_LPC_BASE + LPC_HICR0) & ~BIT_LPC3E; ++ writel(val, AST_LPC_BASE + LPC_HICR0); ++ val = readl(AST_LPC_BASE + LPC_HICR4) & ~BIT_KCSENBL; ++ writel(val, AST_LPC_BASE + LPC_HICR4); ++ val = readl(AST_LPC_BASE + LPC_HICR2) & ~BIT_IBFIE3; ++ writel(val, AST_LPC_BASE + LPC_HICR2); ++ } ++ break; ++ ++ case 4: ++ if (enable) { ++ val = readl(AST_LPC_BASE + LPC_HICRB) | BIT_IBFIE4 | ++ BIT_LPC4E; ++ writel(val, AST_LPC_BASE + LPC_HICRB); ++ } else { ++ val = readl(AST_LPC_BASE + LPC_HICRB) & ++ ~(BIT_IBFIE4 | BIT_LPC4E); ++ writel(val, AST_LPC_BASE + LPC_HICRB); ++ } ++ break; ++ ++ default: ++ DBG_KCS("Invalid channel (%d) specified\n", channel_num); ++ } ++} ++ ++void kcs_init(void) ++{ ++ /* Initialize the KCS channels. */ ++ for (u16 idx = 0; idx < NO_OF_ENABLED_KCS_CHANNELS; idx++) { ++ uint channel_num = (uint)enabled_kcs_channel[idx]; ++ DBG_KCS("%s Channel: %d\n", __func__, channel_num); ++ set_kcs_channel_addr(channel_num); ++ enable_kcs_channel(channel_num, 1); ++ ++ /* Set KCS channel state to idle */ ++ set_kcs_state(channel_num, KCS_STATE_IDLE); ++ /* KCS interrupt */ ++ irq_install_handler(IRQ_SRC_KCS_BASE + channel_num - 1, ++ kcs_irq_handler, (void *)channel_num); ++ } ++} +diff --git a/board/aspeed/ast2600_intel/ast-kcs.h b/board/aspeed/ast2600_intel/ast-kcs.h +new file mode 100644 +index 000000000000..e9b949eccf69 +--- /dev/null ++++ b/board/aspeed/ast2600_intel/ast-kcs.h +@@ -0,0 +1,112 @@ ++/* SPDX-License-Identifier: GPL-2.0 */ ++/* Copyright (c) 2018-2020 Intel Corporation */ ++ ++#include <asm/io.h> ++#include <common.h> ++ ++#define KCS_CHANNEL_MAX 4 ++#define IRQ_SRC_KCS_BASE 170 /* IRQ 170 */ ++#define MAX_KCS_PKT_SIZE (64 * 1024) ++/* KCS channel addresses */ ++#define KCS_CHANNEL1_ADDR 0xCA0 ++#define KCS_CHANNEL2_ADDR 0xCA8 ++#define KCS_CHANNEL3_ADDR 0xCA2 /* KCS SMS */ ++#define KCS_CHANNEL4_ADDR 0xCA4 /* KCS SMM */ ++ ++#define ZERO_DATA 0x00 ++ ++#define AST_LPC_BASE 0x1e789000 ++ ++/* Aspeed KCS control registers */ ++#define LPC_HICR0 0x00 /* Host Interface Control Register 0 */ ++#define LPC_HICR1 0x04 /* Host Interface Control Register 1 */ ++#define LPC_HICR2 0x08 /* Host Interface Control Register 2 */ ++#define LPC_HICR3 0x0C /* Host Interface Control Register 3 */ ++#define LPC_HICR4 0x10 /* Host Interface Control Register 4 */ ++#define LPC_LADR3H 0x14 /* LPC channel #3 Address Register H */ ++#define LPC_LADR3L 0x18 /* LPC channel #3 Address Register H */ ++#define LPC_LADR12H 0x1C /* LPC channel #1#2 Address Register H */ ++#define LPC_LADR12L 0x20 /* LPC channel #1#2 Address Register L */ ++#define LPC_IDR1 0x24 /* Input Data Register 1 */ ++#define LPC_IDR2 0x28 /* Input Data Register 2 */ ++#define LPC_IDR3 0x2C /* Input Data Register 3 */ ++#define LPC_ODR1 0x30 /* Output Data Register 1 */ ++#define LPC_ODR2 0x34 /* Output Data Register 2 */ ++#define LPC_ODR3 0x38 /* Output Data Register 3 */ ++#define LPC_STR1 0x3C /* Status Register 1 */ ++#define LPC_STR2 0x40 /* Status Register 2 */ ++#define LPC_STR3 0x44 /* Status Register 3 */ ++#define LPC_HICRB 0x100 /* Host Interface Control Register B */ ++#define LPC_LADR4 0x110 /* LPC channel #4 Address Register */ ++#define LPC_IDR4 0x114 /* Input Data Register 4 */ ++#define LPC_ODR4 0x118 /* Output Data Register 4 */ ++#define LPC_STR4 0x11C /* Status Data Register 4 */ ++ ++/* LPC Bits */ ++#define BIT_LADR12AS BIT(7) /* Channel Address selection */ ++#define BIT_IBFIE1 BIT(1) /* Enable IDR1 Recv completion interrupt */ ++#define BIT_IBFIE2 BIT(2) /* Enable IDR2 Recv completion interrupt */ ++#define BIT_IBFIE3 BIT(3) /* Enable IBF13 interrupt */ ++#define BIT_LPC1E BIT(5) /* Enable LPC channel #1 */ ++#define BIT_LPC2E BIT(6) /* Enable LPC channel #2 */ ++#define BIT_LPC3E BIT(7) /* Enable LPC channel #2 */ ++#define BIT_KCSENBL BIT(2) /* Enable KCS interface in Channel #3 */ ++#define BIT_IBFIE4 BIT(1) ++#define BIT_LPC4E BIT(0) ++ ++#define BIT_STATUS_OBF BIT(0) /* Output Data Register full #1/#2/#3 */ ++#define BIT_STATUS_IBF BIT(1) /* Input Data Register full #1/#2/#3 */ ++#define BIT_STATUS_COD BIT(3) /* Command/Data - (1=command,0=data) */ ++ ++#define KCS_STATE_MASK 0xC0 /* BIT[6:7] of status register */ ++#define KCS_STATE(state) ((state) << 6) ++ ++/* IPMI2.0(section 9.7) - KCS interface State Bits */ ++#define KCS_STATE_IDLE 0x00 ++#define KCS_STATE_READ 0x01 ++#define KCS_STATE_WRITE 0x02 ++#define KCS_STATE_ERROR 0x03 ++ ++/* IPMI2.0(section 9.10) - KCS interface control codes */ ++#define KCS_CTRL_CODE_GET_STATUS_ABORT 0x60 ++#define KCS_CTRL_CODE_WRITE_START 0x61 ++#define KCS_CTRL_CODE_WRITE_END 0x62 ++#define KCS_CTRL_CODE_READ 0x68 ++ ++struct kcs_io_reg { ++ u32 idr; ++ u32 odr; ++ u32 str; ++}; ++ ++enum kcs_phase { ++ KCS_PHASE_IDLE = 0, ++ KCS_PHASE_WRITE_START = 1, ++ KCS_PHASE_WRITE_DATA = 2, ++ KCS_PHASE_WRITE_END = 3, ++ KCS_PHASE_READ_WAIT = 4, ++ KCS_PHASE_READ = 5, ++ KCS_PHASE_ABORT_1 = 6, ++ KCS_PHASE_ABORT_2 = 7, ++ KCS_PHASE_ERROR = 8 ++}; ++ ++enum kcs_error { ++ KCS_NO_ERROR = 0x00, ++ KCS_ABORT_BY_CMD = 0x01, ++ KCS_ILLEGAL_CTRL_CMD = 0x02, ++ KCS_LENGTH_ERROR = 0x06, ++ KCS_UNSPECIFIED_ERROR = 0xFF, ++}; ++ ++struct kcs_packet { ++ enum kcs_phase phase; ++ enum kcs_error error; ++ u16 channel; ++ bool read_req_done; ++ u16 data_in_idx; ++ u8 data_in[MAX_KCS_PKT_SIZE]; ++ u16 data_out_len; ++ u16 data_out_idx; ++ u8 data_out[MAX_KCS_PKT_SIZE]; ++}; +diff --git a/board/aspeed/ast2600_intel/intel.c b/board/aspeed/ast2600_intel/intel.c +index befeaff0a953..6ac24beb930b 100644 +--- a/board/aspeed/ast2600_intel/intel.c ++++ b/board/aspeed/ast2600_intel/intel.c +@@ -251,6 +251,7 @@ int board_early_init_r(void) + } + + extern void espi_init(void); ++extern void kcs_init(void); + extern void timer_enable(int n, u32 interval_us, interrupt_handler_t *handler, + void *cookie); + int board_late_init(void) +@@ -260,6 +261,9 @@ int board_late_init(void) + timer_enable(0, ONE_SEC_IN_USEC, timer_callback, (void *)0); + espi_init(); + ++ if (read_ffuj()) ++ kcs_init(); ++ + return 0; + } + +-- +2.7.4 + |