1 // SPDX-License-Identifier: GPL-2.0-only
11 #include <linux/console.h>
32 	if (memcmp(h->oem_id, "QCOM  ", ACPI_OEM_ID_SIZE))  in qdf2400_erratum_44_present()
35 	if (!memcmp(h->oem_table_id, "QDF2432 ", ACPI_OEM_TABLE_ID_SIZE))  in qdf2400_erratum_44_present()
38 	if (!memcmp(h->oem_table_id, "QDF2400 ", ACPI_OEM_TABLE_ID_SIZE) &&  in qdf2400_erratum_44_present()
39 			h->oem_revision == 1)  in qdf2400_erratum_44_present()
46  * APM X-Gene v1 and v2 UART hardware is an 16550 like device but has its
47  * register aligned to 32-bit. In addition, the BIOS also encoded the
54 	if (tb->interface_type != ACPI_DBG2_16550_COMPATIBLE)  in xgene_8250_erratum_present()
57 	if (memcmp(tb->header.oem_id, "APMC0D", ACPI_OEM_ID_SIZE) &&  in xgene_8250_erratum_present()
58 	    memcmp(tb->header.oem_id, "HPE   ", ACPI_OEM_ID_SIZE))  in xgene_8250_erratum_present()
61 	if (!memcmp(tb->header.oem_table_id, "XGENESPC",  in xgene_8250_erratum_present()
62 	    ACPI_OEM_TABLE_ID_SIZE) && tb->header.oem_revision == 0)  in xgene_8250_erratum_present()
65 	if (!memcmp(tb->header.oem_table_id, "ProLiant",  in xgene_8250_erratum_present()
66 	    ACPI_OEM_TABLE_ID_SIZE) && tb->header.oem_revision == 1)  in xgene_8250_erratum_present()
73  * acpi_parse_spcr() - parse ACPI SPCR table and add preferred console
75  * @enable_earlycon: set up earlycon for the console specified by the table
76  * @enable_console: setup the console specified by the table.
80  * console is registered and if @enable_earlycon is true, earlycon is set up.
81  * If @enable_console is true the system console is also configured.
98 		return -ENODEV;  in acpi_parse_spcr()
104 		return -ENOENT;  in acpi_parse_spcr()
106 	if (table->header.revision < 2)  in acpi_parse_spcr()
107 		pr_info("SPCR table version %d\n", table->header.revision);  in acpi_parse_spcr()
109 	if (table->serial_port.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {  in acpi_parse_spcr()
110 		u32 bit_width = table->serial_port.access_width;  in acpi_parse_spcr()
113 			pr_err("Unacceptable wide SPCR Access Width.  Defaulting to byte size\n");  in acpi_parse_spcr()
118 			pr_err("Unexpected SPCR Access Width.  Defaulting to byte size\n");  in acpi_parse_spcr()
133 	switch (table->interface_type) {  in acpi_parse_spcr()
149 		err = -ENOENT;  in acpi_parse_spcr()
153 	switch (table->baud_rate) {  in acpi_parse_spcr()
157 		 * Assume firmware or bootloader configures console correctly.  in acpi_parse_spcr()
174 		err = -ENOENT;  in acpi_parse_spcr()
180 	 * driver to implement the work-around.  in acpi_parse_spcr()
183 	 * creates the UARTs, whether or not they're used as a console.  in acpi_parse_spcr()
186 	 * console name matches the EARLYCON_DECLARE() statement, and  in acpi_parse_spcr()
190 	 * the console name so that it also says "qdf2400_e44".  Parameter  in acpi_parse_spcr()
193 	 * For consistency, if we change the console name, then we do it  in acpi_parse_spcr()
196 	if (qdf2400_erratum_44_present(&table->header)) {  in acpi_parse_spcr()
214 			 table->serial_port.address);  in acpi_parse_spcr()
217 			 table->serial_port.address, baud_rate);  in acpi_parse_spcr()
220 	pr_info("console: %s\n", opts);  in acpi_parse_spcr()