309 lines
6.8 KiB
C
309 lines
6.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2018 Marvell International Ltd.
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*
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* https://spdx.org/licenses
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*/
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#include <errno.h>
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#include <env.h>
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#include <log.h>
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#include <net.h>
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#include <asm/io.h>
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#include <linux/compiler.h>
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#include <linux/libfdt.h>
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#include <fdtdec.h>
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#include <fdt_support.h>
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#include <asm/arch/board.h>
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#include <asm/global_data.h>
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DECLARE_GLOBAL_DATA_PTR;
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static int fdt_get_mdio_bus(const void *fdt, int phy_offset)
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{
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int node, bus = -1;
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const u64 *reg;
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u64 addr;
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if (phy_offset < 0)
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return -1;
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/* obtain mdio node and get the reg prop */
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node = fdt_parent_offset(fdt, phy_offset);
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if (node < 0)
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return -1;
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reg = fdt_getprop(fdt, node, "reg", NULL);
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addr = fdt64_to_cpu(*reg);
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bus = (addr & (1 << 7)) ? 1 : 0;
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return bus;
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}
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static int fdt_get_phy_addr(const void *fdt, int phy_offset)
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{
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const u32 *reg;
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int addr = -1;
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if (phy_offset < 0)
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return -1;
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reg = fdt_getprop(fdt, phy_offset, "reg", NULL);
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addr = fdt32_to_cpu(*reg);
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return addr;
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}
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void fdt_parse_phy_info(void)
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{
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const void *fdt = gd->fdt_blob;
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int offset = 0, node, bgx_id = 0, lmacid = 0;
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const u32 *val;
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char bgxname[24];
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int len, rgx_id = 0, eth_id = 0;
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int phandle, phy_offset;
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int subnode, i;
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int bdknode;
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bdknode = fdt_path_offset(fdt, "/cavium,bdk");
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if (bdknode < 0) {
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printf("%s: bdk node is missing from device tree: %s\n",
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__func__, fdt_strerror(bdknode));
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}
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offset = fdt_node_offset_by_compatible(fdt, -1, "pci-bridge");
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if (offset < 1)
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return;
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for (bgx_id = 0; bgx_id < MAX_BGX_PER_NODE; bgx_id++) {
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int phy_addr[LMAC_CNT] = {[0 ... LMAC_CNT - 1] = -1};
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bool autoneg_dis[LMAC_CNT] = {[0 ... LMAC_CNT - 1] = 0};
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int mdio_bus[LMAC_CNT] = {[0 ... LMAC_CNT - 1] = -1};
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bool lmac_reg[LMAC_CNT] = {[0 ... LMAC_CNT - 1] = 0};
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bool lmac_enable[LMAC_CNT] = {[0 ... LMAC_CNT - 1] = 0};
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snprintf(bgxname, sizeof(bgxname), "bgx%d", bgx_id);
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node = fdt_subnode_offset(fdt, offset, bgxname);
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if (node < 0) {
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/* check if it is rgx node */
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snprintf(bgxname, sizeof(bgxname), "rgx%d", rgx_id);
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node = fdt_subnode_offset(fdt, offset, bgxname);
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if (node < 0) {
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debug("bgx%d/rgx0 node not found\n", bgx_id);
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return;
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}
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}
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debug("bgx%d node found\n", bgx_id);
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/*
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* loop through each of the bgx/rgx nodes
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* to find PHY nodes
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*/
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fdt_for_each_subnode(subnode, fdt, node) {
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/* Check for reg property */
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val = fdt_getprop(fdt, subnode, "reg", &len);
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if (val) {
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debug("lmacid = %d\n", lmacid);
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lmac_reg[lmacid] = 1;
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}
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/* check for phy-handle property */
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val = fdt_getprop(fdt, subnode, "phy-handle", &len);
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if (val) {
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phandle = fdt32_to_cpu(*val);
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if (!phandle) {
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debug("phandle not valid %d\n", lmacid);
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} else {
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phy_offset = fdt_node_offset_by_phandle
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(fdt, phandle);
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phy_addr[lmacid] = fdt_get_phy_addr
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(fdt, phy_offset);
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mdio_bus[lmacid] = fdt_get_mdio_bus
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(fdt, phy_offset);
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}
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} else {
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debug("phy-handle prop not found %d\n",
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lmacid);
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}
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/* check for autonegotiation property */
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val = fdt_getprop(fdt, subnode,
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"cavium,disable-autonegotiation",
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&len);
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if (val)
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autoneg_dis[lmacid] = 1;
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eth_id++;
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lmacid++;
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}
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for (i = 0; i < MAX_LMAC_PER_BGX; i++) {
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const char *str;
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snprintf(bgxname, sizeof(bgxname),
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"BGX-ENABLE.N0.BGX%d.P%d", bgx_id, i);
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if (bdknode >= 0) {
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str = fdt_getprop(fdt, bdknode,
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bgxname, &len);
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if (str)
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lmac_enable[i] =
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simple_strtol(str, NULL,
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10);
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}
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}
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lmacid = 0;
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bgx_set_board_info(bgx_id, mdio_bus, phy_addr,
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autoneg_dis, lmac_reg, lmac_enable);
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}
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}
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static int fdt_get_bdk_node(void)
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{
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int node, ret;
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const void *fdt = gd->fdt_blob;
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if (!fdt) {
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printf("ERROR: %s: no valid device tree found\n", __func__);
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return 0;
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}
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ret = fdt_check_header(fdt);
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if (ret < 0) {
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printf("fdt: %s\n", fdt_strerror(ret));
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return 0;
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}
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node = fdt_path_offset(fdt, "/cavium,bdk");
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if (node < 0) {
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printf("%s: /cavium,bdk is missing from device tree: %s\n",
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__func__, fdt_strerror(node));
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return 0;
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}
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return node;
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}
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const char *fdt_get_board_serial(void)
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{
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const void *fdt = gd->fdt_blob;
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int node, len = 64;
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const char *str = NULL;
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node = fdt_get_bdk_node();
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if (!node)
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return NULL;
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str = fdt_getprop(fdt, node, "BOARD-SERIAL", &len);
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if (!str)
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printf("Error: cannot retrieve board serial from fdt\n");
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return str;
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}
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const char *fdt_get_board_revision(void)
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{
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const void *fdt = gd->fdt_blob;
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int node, len = 64;
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const char *str = NULL;
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node = fdt_get_bdk_node();
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if (!node)
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return NULL;
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str = fdt_getprop(fdt, node, "BOARD-REVISION", &len);
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if (!str)
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printf("Error: cannot retrieve board revision from fdt\n");
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return str;
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}
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const char *fdt_get_board_model(void)
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{
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const void *fdt = gd->fdt_blob;
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int node, len = 16;
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const char *str = NULL;
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node = fdt_get_bdk_node();
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if (!node)
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return NULL;
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str = fdt_getprop(fdt, node, "BOARD-MODEL", &len);
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if (!str)
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printf("Error: cannot retrieve board model from fdt\n");
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return str;
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}
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void fdt_board_get_ethaddr(int bgx, int lmac, unsigned char *eth)
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{
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const void *fdt = gd->fdt_blob;
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const char *mac = NULL;
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int offset = 0, node, len;
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int subnode, i = 0;
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char bgxname[24];
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offset = fdt_node_offset_by_compatible(fdt, -1, "pci-bridge");
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if (offset < 0) {
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printf("%s couldn't find mrml bridge node in fdt\n",
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__func__);
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return;
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}
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if (bgx == 2 && otx_is_soc(CN81XX)) {
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snprintf(bgxname, sizeof(bgxname), "rgx%d", 0);
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lmac = 0;
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} else {
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snprintf(bgxname, sizeof(bgxname), "bgx%d", bgx);
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}
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node = fdt_subnode_offset(fdt, offset, bgxname);
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fdt_for_each_subnode(subnode, fdt, node) {
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if (i++ != lmac)
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continue;
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/* check for local-mac-address */
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mac = fdt_getprop(fdt, subnode, "local-mac-address", &len);
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if (mac) {
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debug("%s mac %pM\n", __func__, mac);
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memcpy(eth, mac, ARP_HLEN);
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} else {
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memset(eth, 0, ARP_HLEN);
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}
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debug("%s eth %pM\n", __func__, eth);
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return;
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}
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}
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int arch_fixup_memory_node(void *blob)
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{
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return 0;
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}
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int ft_board_setup(void *blob, struct bd_info *bd)
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{
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/* remove "cavium, bdk" node from DT */
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int ret = 0, offset;
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ret = fdt_check_header(blob);
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if (ret < 0) {
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printf("ERROR: %s\n", fdt_strerror(ret));
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return ret;
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}
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if (blob) {
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/* delete cavium,bdk node if it exists */
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offset = fdt_path_offset(blob, "/cavium,bdk");
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if (offset >= 0) {
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ret = fdt_del_node(blob, offset);
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if (ret < 0) {
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printf("WARNING : could not remove bdk node\n");
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return ret;
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}
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debug("%s deleted bdk node\n", __func__);
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}
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}
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return 0;
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}
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/**
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* Return the FDT base address that was passed by ATF
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*
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* Return: FDT base address received from ATF in x1 register
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*/
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void *board_fdt_blob_setup(int *err)
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{
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*err = 0;
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return (void *)fdt_base_addr;
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}
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