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e4310566de
Different TI platforms has to read with different combination to get the mac address from efuse. So add support to read mac address based on machine/device compatibles. The code is taken from Linux drivers/net/ethernet/ti/cpsw-common.c done by Tony Lindgren. Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
122 lines
3.1 KiB
C
122 lines
3.1 KiB
C
/*
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* CPSW common - libs used across TI ethernet devices.
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*
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* Copyright (C) 2016, Texas Instruments, Incorporated
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dm.h>
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#include <fdt_support.h>
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#include <asm/io.h>
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#include <cpsw.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define CTRL_MAC_REG(offset, id) ((offset) + 0x8 * (id))
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static int davinci_emac_3517_get_macid(struct udevice *dev, u16 offset,
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int slave, u8 *mac_addr)
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{
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void *fdt = (void *)gd->fdt_blob;
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int node = dev->of_offset;
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u32 macid_lsb;
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u32 macid_msb;
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fdt32_t gmii = 0;
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int syscon;
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u32 addr;
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syscon = fdtdec_lookup_phandle(fdt, node, "syscon");
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if (syscon < 0) {
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error("Syscon offset not found\n");
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return -ENOENT;
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}
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addr = (u32)map_physmem(fdt_translate_address(fdt, syscon, &gmii),
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sizeof(u32), MAP_NOCACHE);
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if (addr == FDT_ADDR_T_NONE) {
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error("Not able to get syscon address to get mac efuse address\n");
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return -ENOENT;
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}
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addr += CTRL_MAC_REG(offset, slave);
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/* try reading mac address from efuse */
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macid_lsb = readl(addr);
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macid_msb = readl(addr + 4);
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mac_addr[0] = (macid_msb >> 16) & 0xff;
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mac_addr[1] = (macid_msb >> 8) & 0xff;
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mac_addr[2] = macid_msb & 0xff;
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mac_addr[3] = (macid_lsb >> 16) & 0xff;
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mac_addr[4] = (macid_lsb >> 8) & 0xff;
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mac_addr[5] = macid_lsb & 0xff;
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return 0;
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}
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static int cpsw_am33xx_cm_get_macid(struct udevice *dev, u16 offset, int slave,
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u8 *mac_addr)
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{
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void *fdt = (void *)gd->fdt_blob;
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int node = dev->of_offset;
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u32 macid_lo;
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u32 macid_hi;
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fdt32_t gmii = 0;
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int syscon;
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u32 addr;
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syscon = fdtdec_lookup_phandle(fdt, node, "syscon");
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if (syscon < 0) {
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error("Syscon offset not found\n");
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return -ENOENT;
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}
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addr = (u32)map_physmem(fdt_translate_address(fdt, syscon, &gmii),
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sizeof(u32), MAP_NOCACHE);
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if (addr == FDT_ADDR_T_NONE) {
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error("Not able to get syscon address to get mac efuse address\n");
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return -ENOENT;
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}
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addr += CTRL_MAC_REG(offset, slave);
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/* try reading mac address from efuse */
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macid_lo = readl(addr);
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macid_hi = readl(addr + 4);
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mac_addr[5] = (macid_lo >> 8) & 0xff;
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mac_addr[4] = macid_lo & 0xff;
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mac_addr[3] = (macid_hi >> 24) & 0xff;
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mac_addr[2] = (macid_hi >> 16) & 0xff;
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mac_addr[1] = (macid_hi >> 8) & 0xff;
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mac_addr[0] = macid_hi & 0xff;
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return 0;
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}
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int ti_cm_get_macid(struct udevice *dev, int slave, u8 *mac_addr)
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{
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if (of_machine_is_compatible("ti,dm8148"))
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return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr);
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if (of_machine_is_compatible("ti,am33xx"))
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return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr);
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if (of_device_is_compatible(dev, "ti,am3517-emac"))
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return davinci_emac_3517_get_macid(dev, 0x110, slave, mac_addr);
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if (of_device_is_compatible(dev, "ti,dm816-emac"))
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return cpsw_am33xx_cm_get_macid(dev, 0x30, slave, mac_addr);
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if (of_machine_is_compatible("ti,am4372"))
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return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr);
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if (of_machine_is_compatible("ti,dra7"))
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return davinci_emac_3517_get_macid(dev, 0x514, slave, mac_addr);
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dev_err(dev, "incompatible machine/device type for reading mac address\n");
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return -ENOENT;
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}
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