From bd8510df881f63a9e7768824cf0e33c4702dcde1 Mon Sep 17 00:00:00 2001 From: Manuel Lauss Date: Thu, 13 Sep 2012 17:44:39 +0200 Subject: MIPS: Alchemy: Single kernel for DB1200/1300/1550 Combine support for the DB1200/PB1200, DB1300 and DB1550 boards into a single kernel image. defconfig-generated image verified on DB1200, DB1300 and DB1550. Signed-off-by: Manuel Lauss Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/4335/ Signed-off-by: Ralf Baechle --- arch/mips/alchemy/devboards/db1235.c | 84 ++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 arch/mips/alchemy/devboards/db1235.c (limited to 'arch/mips/alchemy/devboards/db1235.c') diff --git a/arch/mips/alchemy/devboards/db1235.c b/arch/mips/alchemy/devboards/db1235.c new file mode 100644 index 000000000000..15003eb1f840 --- /dev/null +++ b/arch/mips/alchemy/devboards/db1235.c @@ -0,0 +1,84 @@ +/* + * DB1200/PB1200 / DB1550 / DB1300 board support. + * + * These 4 boards can reliably be supported in a single kernel image. + */ + +#include +#include + +int __init db1200_board_setup(void); +int __init db1200_dev_setup(void); +int __init db1300_board_setup(void); +int __init db1300_dev_setup(void); +int __init db1550_board_setup(void); +int __init db1550_dev_setup(void); +int __init db1550_pci_setup(void); + +static const char *board_type_str(void) +{ + switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) { + case BCSR_WHOAMI_PB1200_DDR1: + case BCSR_WHOAMI_PB1200_DDR2: + return "PB1200"; + case BCSR_WHOAMI_DB1200: + return "DB1200"; + case BCSR_WHOAMI_DB1300: + return "DB1300"; + case BCSR_WHOAMI_DB1550: + return "DB1550"; + default: + return "(unknown)"; + } +} + +const char *get_system_type(void) +{ + return board_type_str(); +} + +void __init board_setup(void) +{ + int ret; + + switch (alchemy_get_cputype()) { + case ALCHEMY_CPU_AU1550: + ret = db1550_board_setup(); + break; + case ALCHEMY_CPU_AU1200: + ret = db1200_board_setup(); + break; + case ALCHEMY_CPU_AU1300: + ret = db1300_board_setup(); + break; + default: + pr_err("unsupported CPU on board\n"); + ret = -ENODEV; + } + if (ret) + panic("cannot initialize board support\n"); +} + +int __init db1235_arch_init(void) +{ + if (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)) == BCSR_WHOAMI_DB1550) + return db1550_pci_setup(); + return 0; +} +arch_initcall(db1235_arch_init); + +int __init db1235_dev_init(void) +{ + switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) { + case BCSR_WHOAMI_PB1200_DDR1: + case BCSR_WHOAMI_PB1200_DDR2: + case BCSR_WHOAMI_DB1200: + return db1200_dev_setup(); + case BCSR_WHOAMI_DB1300: + return db1300_dev_setup(); + case BCSR_WHOAMI_DB1550: + return db1550_dev_setup(); + } + return 0; +} +device_initcall(db1235_dev_init); -- cgit v1.2.3