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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/mips/alchemy/devboards/db1xxx.c
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// SPDX-License-Identifier: GPL-2.0

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/*

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 * Alchemy DB/PB1xxx board support.

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 */

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#include <asm/prom.h>

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#include <asm/mach-au1x00/au1000.h>

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#include <asm/mach-db1x00/bcsr.h>

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int __init db1000_board_setup(void);

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int __init db1000_dev_setup(void);

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int __init db1500_pci_setup(void);

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int __init db1200_board_setup(void);

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int __init db1200_dev_setup(void);

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int __init db1300_board_setup(void);

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int __init db1300_dev_setup(void);

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int __init db1550_board_setup(void);

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int __init db1550_dev_setup(void);

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int __init db1550_pci_setup(int);

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static const char *board_type_str(void)

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{

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	switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) {

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	case BCSR_WHOAMI_DB1000:

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		return "DB1000";

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	case BCSR_WHOAMI_DB1500:

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		return "DB1500";

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	case BCSR_WHOAMI_DB1100:

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		return "DB1100";

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	case BCSR_WHOAMI_PB1500:

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	case BCSR_WHOAMI_PB1500R2:

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		return "PB1500";

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	case BCSR_WHOAMI_PB1100:

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		return "PB1100";

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	case BCSR_WHOAMI_PB1200_DDR1:

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	case BCSR_WHOAMI_PB1200_DDR2:

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		return "PB1200";

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	case BCSR_WHOAMI_DB1200:

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		return "DB1200";

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	case BCSR_WHOAMI_DB1300:

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		return "DB1300";

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	case BCSR_WHOAMI_DB1550:

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		return "DB1550";

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	case BCSR_WHOAMI_PB1550_SDR:

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	case BCSR_WHOAMI_PB1550_DDR:

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		return "PB1550";

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	default:

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		return "(unknown)";

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	}

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}

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const char *get_system_type(void)

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{

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	return board_type_str();

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}

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void __init board_setup(void)

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{

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	int ret;

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	switch (alchemy_get_cputype()) {

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	case ALCHEMY_CPU_AU1000:

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	case ALCHEMY_CPU_AU1500:

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	case ALCHEMY_CPU_AU1100:

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		ret = db1000_board_setup();

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		break;

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	case ALCHEMY_CPU_AU1550:

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		ret = db1550_board_setup();

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		break;

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	case ALCHEMY_CPU_AU1200:

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		ret = db1200_board_setup();

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		break;

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	case ALCHEMY_CPU_AU1300:

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		ret = db1300_board_setup();

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		break;

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	default:

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		pr_err("unsupported CPU on board\n");

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		ret = -ENODEV;

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	}

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	if (ret)

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		panic("cannot initialize board support");

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}

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static int __init db1xxx_arch_init(void)

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{

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	int id = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI));

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	if (id == BCSR_WHOAMI_DB1550)

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		return db1550_pci_setup(0);

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	else if ((id == BCSR_WHOAMI_PB1550_SDR) ||

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		 (id == BCSR_WHOAMI_PB1550_DDR))

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		return db1550_pci_setup(1);

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	else if ((id == BCSR_WHOAMI_DB1500) || (id == BCSR_WHOAMI_PB1500) ||

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		 (id == BCSR_WHOAMI_PB1500R2))

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		return db1500_pci_setup();

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	return 0;

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}

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arch_initcall(db1xxx_arch_init);

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static int __init db1xxx_dev_init(void)

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{

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	mips_set_machine_name(board_type_str());

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	switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) {

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	case BCSR_WHOAMI_DB1000:

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	case BCSR_WHOAMI_DB1500:

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	case BCSR_WHOAMI_DB1100:

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	case BCSR_WHOAMI_PB1500:

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	case BCSR_WHOAMI_PB1500R2:

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	case BCSR_WHOAMI_PB1100:

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		return db1000_dev_setup();

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	case BCSR_WHOAMI_PB1200_DDR1:

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	case BCSR_WHOAMI_PB1200_DDR2:

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	case BCSR_WHOAMI_DB1200:

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		return db1200_dev_setup();

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	case BCSR_WHOAMI_DB1300:

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		return db1300_dev_setup();

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	case BCSR_WHOAMI_DB1550:

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	case BCSR_WHOAMI_PB1550_SDR:

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	case BCSR_WHOAMI_PB1550_DDR:

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		return db1550_dev_setup();

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	}

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	return 0;

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}

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device_initcall(db1xxx_dev_init);

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