cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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db1xxx.c (2902B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 * Alchemy DB/PB1xxx board support.
      4 */
      5
      6#include <asm/prom.h>
      7#include <asm/mach-au1x00/au1000.h>
      8#include <asm/mach-db1x00/bcsr.h>
      9
     10int __init db1000_board_setup(void);
     11int __init db1000_dev_setup(void);
     12int __init db1500_pci_setup(void);
     13int __init db1200_board_setup(void);
     14int __init db1200_dev_setup(void);
     15int __init db1300_board_setup(void);
     16int __init db1300_dev_setup(void);
     17int __init db1550_board_setup(void);
     18int __init db1550_dev_setup(void);
     19int __init db1550_pci_setup(int);
     20
     21static const char *board_type_str(void)
     22{
     23	switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) {
     24	case BCSR_WHOAMI_DB1000:
     25		return "DB1000";
     26	case BCSR_WHOAMI_DB1500:
     27		return "DB1500";
     28	case BCSR_WHOAMI_DB1100:
     29		return "DB1100";
     30	case BCSR_WHOAMI_PB1500:
     31	case BCSR_WHOAMI_PB1500R2:
     32		return "PB1500";
     33	case BCSR_WHOAMI_PB1100:
     34		return "PB1100";
     35	case BCSR_WHOAMI_PB1200_DDR1:
     36	case BCSR_WHOAMI_PB1200_DDR2:
     37		return "PB1200";
     38	case BCSR_WHOAMI_DB1200:
     39		return "DB1200";
     40	case BCSR_WHOAMI_DB1300:
     41		return "DB1300";
     42	case BCSR_WHOAMI_DB1550:
     43		return "DB1550";
     44	case BCSR_WHOAMI_PB1550_SDR:
     45	case BCSR_WHOAMI_PB1550_DDR:
     46		return "PB1550";
     47	default:
     48		return "(unknown)";
     49	}
     50}
     51
     52const char *get_system_type(void)
     53{
     54	return board_type_str();
     55}
     56
     57void __init board_setup(void)
     58{
     59	int ret;
     60
     61	switch (alchemy_get_cputype()) {
     62	case ALCHEMY_CPU_AU1000:
     63	case ALCHEMY_CPU_AU1500:
     64	case ALCHEMY_CPU_AU1100:
     65		ret = db1000_board_setup();
     66		break;
     67	case ALCHEMY_CPU_AU1550:
     68		ret = db1550_board_setup();
     69		break;
     70	case ALCHEMY_CPU_AU1200:
     71		ret = db1200_board_setup();
     72		break;
     73	case ALCHEMY_CPU_AU1300:
     74		ret = db1300_board_setup();
     75		break;
     76	default:
     77		pr_err("unsupported CPU on board\n");
     78		ret = -ENODEV;
     79	}
     80	if (ret)
     81		panic("cannot initialize board support");
     82}
     83
     84static int __init db1xxx_arch_init(void)
     85{
     86	int id = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI));
     87	if (id == BCSR_WHOAMI_DB1550)
     88		return db1550_pci_setup(0);
     89	else if ((id == BCSR_WHOAMI_PB1550_SDR) ||
     90		 (id == BCSR_WHOAMI_PB1550_DDR))
     91		return db1550_pci_setup(1);
     92	else if ((id == BCSR_WHOAMI_DB1500) || (id == BCSR_WHOAMI_PB1500) ||
     93		 (id == BCSR_WHOAMI_PB1500R2))
     94		return db1500_pci_setup();
     95
     96	return 0;
     97}
     98arch_initcall(db1xxx_arch_init);
     99
    100static int __init db1xxx_dev_init(void)
    101{
    102	mips_set_machine_name(board_type_str());
    103	switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) {
    104	case BCSR_WHOAMI_DB1000:
    105	case BCSR_WHOAMI_DB1500:
    106	case BCSR_WHOAMI_DB1100:
    107	case BCSR_WHOAMI_PB1500:
    108	case BCSR_WHOAMI_PB1500R2:
    109	case BCSR_WHOAMI_PB1100:
    110		return db1000_dev_setup();
    111	case BCSR_WHOAMI_PB1200_DDR1:
    112	case BCSR_WHOAMI_PB1200_DDR2:
    113	case BCSR_WHOAMI_DB1200:
    114		return db1200_dev_setup();
    115	case BCSR_WHOAMI_DB1300:
    116		return db1300_dev_setup();
    117	case BCSR_WHOAMI_DB1550:
    118	case BCSR_WHOAMI_PB1550_SDR:
    119	case BCSR_WHOAMI_PB1550_DDR:
    120		return db1550_dev_setup();
    121	}
    122	return 0;
    123}
    124device_initcall(db1xxx_dev_init);