1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * CPSW common - libs used across TI ethernet devices.
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * Copyright (C) 2016, Texas Instruments, Incorporated
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include <common.h>
10*4882a593Smuzhiyun #include <dm.h>
11*4882a593Smuzhiyun #include <fdt_support.h>
12*4882a593Smuzhiyun #include <asm/io.h>
13*4882a593Smuzhiyun #include <cpsw.h>
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun DECLARE_GLOBAL_DATA_PTR;
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun #define CTRL_MAC_REG(offset, id) ((offset) + 0x8 * (id))
18*4882a593Smuzhiyun
davinci_emac_3517_get_macid(struct udevice * dev,u16 offset,int slave,u8 * mac_addr)19*4882a593Smuzhiyun static int davinci_emac_3517_get_macid(struct udevice *dev, u16 offset,
20*4882a593Smuzhiyun int slave, u8 *mac_addr)
21*4882a593Smuzhiyun {
22*4882a593Smuzhiyun void *fdt = (void *)gd->fdt_blob;
23*4882a593Smuzhiyun int node = dev_of_offset(dev);
24*4882a593Smuzhiyun u32 macid_lsb;
25*4882a593Smuzhiyun u32 macid_msb;
26*4882a593Smuzhiyun fdt32_t gmii = 0;
27*4882a593Smuzhiyun int syscon;
28*4882a593Smuzhiyun u32 addr;
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun syscon = fdtdec_lookup_phandle(fdt, node, "syscon");
31*4882a593Smuzhiyun if (syscon < 0) {
32*4882a593Smuzhiyun pr_err("Syscon offset not found\n");
33*4882a593Smuzhiyun return -ENOENT;
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun addr = (u32)map_physmem(fdt_translate_address(fdt, syscon, &gmii),
37*4882a593Smuzhiyun sizeof(u32), MAP_NOCACHE);
38*4882a593Smuzhiyun if (addr == FDT_ADDR_T_NONE) {
39*4882a593Smuzhiyun pr_err("Not able to get syscon address to get mac efuse address\n");
40*4882a593Smuzhiyun return -ENOENT;
41*4882a593Smuzhiyun }
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun addr += CTRL_MAC_REG(offset, slave);
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun /* try reading mac address from efuse */
46*4882a593Smuzhiyun macid_lsb = readl(addr);
47*4882a593Smuzhiyun macid_msb = readl(addr + 4);
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun mac_addr[0] = (macid_msb >> 16) & 0xff;
50*4882a593Smuzhiyun mac_addr[1] = (macid_msb >> 8) & 0xff;
51*4882a593Smuzhiyun mac_addr[2] = macid_msb & 0xff;
52*4882a593Smuzhiyun mac_addr[3] = (macid_lsb >> 16) & 0xff;
53*4882a593Smuzhiyun mac_addr[4] = (macid_lsb >> 8) & 0xff;
54*4882a593Smuzhiyun mac_addr[5] = macid_lsb & 0xff;
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun return 0;
57*4882a593Smuzhiyun }
58*4882a593Smuzhiyun
cpsw_am33xx_cm_get_macid(struct udevice * dev,u16 offset,int slave,u8 * mac_addr)59*4882a593Smuzhiyun static int cpsw_am33xx_cm_get_macid(struct udevice *dev, u16 offset, int slave,
60*4882a593Smuzhiyun u8 *mac_addr)
61*4882a593Smuzhiyun {
62*4882a593Smuzhiyun void *fdt = (void *)gd->fdt_blob;
63*4882a593Smuzhiyun int node = dev_of_offset(dev);
64*4882a593Smuzhiyun u32 macid_lo;
65*4882a593Smuzhiyun u32 macid_hi;
66*4882a593Smuzhiyun fdt32_t gmii = 0;
67*4882a593Smuzhiyun int syscon;
68*4882a593Smuzhiyun u32 addr;
69*4882a593Smuzhiyun
70*4882a593Smuzhiyun syscon = fdtdec_lookup_phandle(fdt, node, "syscon");
71*4882a593Smuzhiyun if (syscon < 0) {
72*4882a593Smuzhiyun pr_err("Syscon offset not found\n");
73*4882a593Smuzhiyun return -ENOENT;
74*4882a593Smuzhiyun }
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun addr = (u32)map_physmem(fdt_translate_address(fdt, syscon, &gmii),
77*4882a593Smuzhiyun sizeof(u32), MAP_NOCACHE);
78*4882a593Smuzhiyun if (addr == FDT_ADDR_T_NONE) {
79*4882a593Smuzhiyun pr_err("Not able to get syscon address to get mac efuse address\n");
80*4882a593Smuzhiyun return -ENOENT;
81*4882a593Smuzhiyun }
82*4882a593Smuzhiyun
83*4882a593Smuzhiyun addr += CTRL_MAC_REG(offset, slave);
84*4882a593Smuzhiyun
85*4882a593Smuzhiyun /* try reading mac address from efuse */
86*4882a593Smuzhiyun macid_lo = readl(addr);
87*4882a593Smuzhiyun macid_hi = readl(addr + 4);
88*4882a593Smuzhiyun
89*4882a593Smuzhiyun mac_addr[5] = (macid_lo >> 8) & 0xff;
90*4882a593Smuzhiyun mac_addr[4] = macid_lo & 0xff;
91*4882a593Smuzhiyun mac_addr[3] = (macid_hi >> 24) & 0xff;
92*4882a593Smuzhiyun mac_addr[2] = (macid_hi >> 16) & 0xff;
93*4882a593Smuzhiyun mac_addr[1] = (macid_hi >> 8) & 0xff;
94*4882a593Smuzhiyun mac_addr[0] = macid_hi & 0xff;
95*4882a593Smuzhiyun
96*4882a593Smuzhiyun return 0;
97*4882a593Smuzhiyun }
98*4882a593Smuzhiyun
ti_cm_get_macid(struct udevice * dev,int slave,u8 * mac_addr)99*4882a593Smuzhiyun int ti_cm_get_macid(struct udevice *dev, int slave, u8 *mac_addr)
100*4882a593Smuzhiyun {
101*4882a593Smuzhiyun if (of_machine_is_compatible("ti,dm8148"))
102*4882a593Smuzhiyun return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr);
103*4882a593Smuzhiyun
104*4882a593Smuzhiyun if (of_machine_is_compatible("ti,am33xx"))
105*4882a593Smuzhiyun return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr);
106*4882a593Smuzhiyun
107*4882a593Smuzhiyun if (device_is_compatible(dev, "ti,am3517-emac"))
108*4882a593Smuzhiyun return davinci_emac_3517_get_macid(dev, 0x110, slave, mac_addr);
109*4882a593Smuzhiyun
110*4882a593Smuzhiyun if (device_is_compatible(dev, "ti,dm816-emac"))
111*4882a593Smuzhiyun return cpsw_am33xx_cm_get_macid(dev, 0x30, slave, mac_addr);
112*4882a593Smuzhiyun
113*4882a593Smuzhiyun if (of_machine_is_compatible("ti,am43"))
114*4882a593Smuzhiyun return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr);
115*4882a593Smuzhiyun
116*4882a593Smuzhiyun if (of_machine_is_compatible("ti,dra7"))
117*4882a593Smuzhiyun return davinci_emac_3517_get_macid(dev, 0x514, slave, mac_addr);
118*4882a593Smuzhiyun
119*4882a593Smuzhiyun dev_err(dev, "incompatible machine/device type for reading mac address\n");
120*4882a593Smuzhiyun return -ENOENT;
121*4882a593Smuzhiyun }
122