diff options
Diffstat (limited to 'arch/m68k')
| -rw-r--r-- | arch/m68k/Kconfig.machine | 2 | ||||
| -rw-r--r-- | arch/m68k/atari/Makefile | 2 | ||||
| -rw-r--r-- | arch/m68k/atari/nvram.c | 272 | ||||
| -rw-r--r-- | arch/m68k/include/asm/atarihw.h | 6 | ||||
| -rw-r--r-- | arch/m68k/include/asm/macintosh.h | 4 | ||||
| -rw-r--r-- | arch/m68k/kernel/setup_mm.c | 82 | ||||
| -rw-r--r-- | arch/m68k/mac/misc.c | 174 |
7 files changed, 475 insertions, 67 deletions
diff --git a/arch/m68k/Kconfig.machine b/arch/m68k/Kconfig.machine index 328ba83d735b..c01e103492fd 100644 --- a/arch/m68k/Kconfig.machine +++ b/arch/m68k/Kconfig.machine @@ -16,6 +16,7 @@ config ATARI bool "Atari support" depends on MMU select MMU_MOTOROLA if MMU + select HAVE_ARCH_NVRAM_OPS help This option enables support for the 68000-based Atari series of computers (including the TT, Falcon and Medusa). If you plan to use @@ -26,6 +27,7 @@ config MAC bool "Macintosh support" depends on MMU select MMU_MOTOROLA if MMU + select HAVE_ARCH_NVRAM_OPS help This option enables support for the Apple Macintosh series of computers (yes, there is experimental support now, at least for part diff --git a/arch/m68k/atari/Makefile b/arch/m68k/atari/Makefile index 0cac723306f9..0b86bb6cfa87 100644 --- a/arch/m68k/atari/Makefile +++ b/arch/m68k/atari/Makefile @@ -6,3 +6,5 @@ obj-y := config.o time.o debug.o ataints.o stdma.o \ atasound.o stram.o obj-$(CONFIG_ATARI_KBD_CORE) += atakeyb.o + +obj-$(CONFIG_NVRAM:m=y) += nvram.o diff --git a/arch/m68k/atari/nvram.c b/arch/m68k/atari/nvram.c new file mode 100644 index 000000000000..7000d2443aa3 --- /dev/null +++ b/arch/m68k/atari/nvram.c @@ -0,0 +1,272 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * CMOS/NV-RAM driver for Atari. Adapted from drivers/char/nvram.c. + * Copyright (C) 1997 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> + * idea by and with help from Richard Jelinek <rj@suse.de> + * Portions copyright (c) 2001,2002 Sun Microsystems (thockin@sun.com) + * Further contributions from Cesar Barros, Erik Gilling, Tim Hockin and + * Wim Van Sebroeck. + */ + +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/mc146818rtc.h> +#include <linux/module.h> +#include <linux/nvram.h> +#include <linux/proc_fs.h> +#include <linux/seq_file.h> +#include <linux/spinlock.h> +#include <linux/types.h> +#include <asm/atarihw.h> +#include <asm/atariints.h> + +#define NVRAM_BYTES 50 + +/* It is worth noting that these functions all access bytes of general + * purpose memory in the NVRAM - that is to say, they all add the + * NVRAM_FIRST_BYTE offset. Pass them offsets into NVRAM as if you did not + * know about the RTC cruft. + */ + +/* Note that *all* calls to CMOS_READ and CMOS_WRITE must be done with + * rtc_lock held. Due to the index-port/data-port design of the RTC, we + * don't want two different things trying to get to it at once. (e.g. the + * periodic 11 min sync from kernel/time/ntp.c vs. this driver.) + */ + +static unsigned char __nvram_read_byte(int i) +{ + return CMOS_READ(NVRAM_FIRST_BYTE + i); +} + +/* This races nicely with trying to read with checksum checking */ +static void __nvram_write_byte(unsigned char c, int i) +{ + CMOS_WRITE(c, NVRAM_FIRST_BYTE + i); +} + +/* On Ataris, the checksum is over all bytes except the checksum bytes + * themselves; these are at the very end. + */ +#define ATARI_CKS_RANGE_START 0 +#define ATARI_CKS_RANGE_END 47 +#define ATARI_CKS_LOC 48 + +static int __nvram_check_checksum(void) +{ + int i; + unsigned char sum = 0; + + for (i = ATARI_CKS_RANGE_START; i <= ATARI_CKS_RANGE_END; ++i) + sum += __nvram_read_byte(i); + return (__nvram_read_byte(ATARI_CKS_LOC) == (~sum & 0xff)) && + (__nvram_read_byte(ATARI_CKS_LOC + 1) == (sum & 0xff)); +} + +static void __nvram_set_checksum(void) +{ + int i; + unsigned char sum = 0; + + for (i = ATARI_CKS_RANGE_START; i <= ATARI_CKS_RANGE_END; ++i) + sum += __nvram_read_byte(i); + __nvram_write_byte(~sum, ATARI_CKS_LOC); + __nvram_write_byte(sum, ATARI_CKS_LOC + 1); +} + +long atari_nvram_set_checksum(void) +{ + spin_lock_irq(&rtc_lock); + __nvram_set_checksum(); + spin_unlock_irq(&rtc_lock); + return 0; +} + +long atari_nvram_initialize(void) +{ + loff_t i; + + spin_lock_irq(&rtc_lock); + for (i = 0; i < NVRAM_BYTES; ++i) + __nvram_write_byte(0, i); + __nvram_set_checksum(); + spin_unlock_irq(&rtc_lock); + return 0; +} + +ssize_t atari_nvram_read(char *buf, size_t count, loff_t *ppos) +{ + char *p = buf; + loff_t i; + + spin_lock_irq(&rtc_lock); + if (!__nvram_check_checksum()) { + spin_unlock_irq(&rtc_lock); + return -EIO; + } + for (i = *ppos; count > 0 && i < NVRAM_BYTES; --count, ++i, ++p) + *p = __nvram_read_byte(i); + spin_unlock_irq(&rtc_lock); + + *ppos = i; + return p - buf; +} + +ssize_t atari_nvram_write(char *buf, size_t count, loff_t *ppos) +{ + char *p = buf; + loff_t i; + + spin_lock_irq(&rtc_lock); + if (!__nvram_check_checksum()) { + spin_unlock_irq(&rtc_lock); + return -EIO; + } + for (i = *ppos; count > 0 && i < NVRAM_BYTES; --count, ++i, ++p) + __nvram_write_byte(*p, i); + __nvram_set_checksum(); + spin_unlock_irq(&rtc_lock); + + *ppos = i; + return p - buf; +} + +ssize_t atari_nvram_get_size(void) +{ + return NVRAM_BYTES; +} + +#ifdef CONFIG_PROC_FS +static struct { + unsigned char val; + const char *name; +} boot_prefs[] = { + { 0x80, "TOS" }, + { 0x40, "ASV" }, + { 0x20, "NetBSD (?)" }, + { 0x10, "Linux" }, + { 0x00, "unspecified" }, +}; + +static const char * const languages[] = { + "English (US)", + "German", + "French", + "English (UK)", + "Spanish", + "Italian", + "6 (undefined)", + "Swiss (French)", + "Swiss (German)", +}; + +static const char * const dateformat[] = { + "MM%cDD%cYY", + "DD%cMM%cYY", + "YY%cMM%cDD", + "YY%cDD%cMM", + "4 (undefined)", + "5 (undefined)", + "6 (undefined)", + "7 (undefined)", +}; + +static const char * const colors[] = { + "2", "4", "16", "256", "65536", "??", "??", "??" +}; + +static void atari_nvram_proc_read(unsigned char *nvram, struct seq_file *seq, + void *offset) +{ + int checksum; + int i; + unsigned int vmode; + + spin_lock_irq(&rtc_lock); + checksum = __nvram_check_checksum(); + spin_unlock_irq(&rtc_lock); + + seq_printf(seq, "Checksum status : %svalid\n", checksum ? "" : "not "); + + seq_puts(seq, "Boot preference : "); + for (i = ARRAY_SIZE(boot_prefs) - 1; i >= 0; --i) + if (nvram[1] == boot_prefs[i].val) { + seq_printf(seq, "%s\n", boot_prefs[i].name); + break; + } + if (i < 0) + seq_printf(seq, "0x%02x (undefined)\n", nvram[1]); + + seq_printf(seq, "SCSI arbitration : %s\n", + (nvram[16] & 0x80) ? "on" : "off"); + seq_puts(seq, "SCSI host ID : "); + if (nvram[16] & 0x80) + seq_printf(seq, "%d\n", nvram[16] & 7); + else + seq_puts(seq, "n/a\n"); + + if (!MACH_IS_FALCON) + return; + + seq_puts(seq, "OS language : "); + if (nvram[6] < ARRAY_SIZE(languages)) + seq_printf(seq, "%s\n", languages[nvram[6]]); + else + seq_printf(seq, "%u (undefined)\n", nvram[6]); + seq_puts(seq, "Keyboard language: "); + if (nvram[7] < ARRAY_SIZE(languages)) + seq_printf(seq, "%s\n", languages[nvram[7]]); + else + seq_printf(seq, "%u (undefined)\n", nvram[7]); + seq_puts(seq, "Date format : "); + seq_printf(seq, dateformat[nvram[8] & 7], + nvram[9] ? nvram[9] : '/', nvram[9] ? nvram[9] : '/'); + seq_printf(seq, ", %dh clock\n", nvram[8] & 16 ? 24 : 12); + seq_puts(seq, "Boot delay : "); + if (nvram[10] == 0) + seq_puts(seq, "default\n"); + else + seq_printf(seq, "%ds%s\n", nvram[10], + nvram[10] < 8 ? ", no memory test" : ""); + + vmode = (nvram[14] << 8) | nvram[15]; + seq_printf(seq, + "Video mode : %s colors, %d columns, %s %s monitor\n", + colors[vmode & 7], vmode & 8 ? 80 : 40, + vmode & 16 ? "VGA" : "TV", vmode & 32 ? "PAL" : "NTSC"); + seq_printf(seq, + " %soverscan, compat. mode %s%s\n", + vmode & 64 ? "" : "no ", vmode & 128 ? "on" : "off", + vmode & 256 ? + (vmode & 16 ? ", line doubling" : ", half screen") : ""); +} + +static int nvram_proc_read(struct seq_file *seq, void *offset) +{ + unsigned char contents[NVRAM_BYTES]; + int i; + + spin_lock_irq(&rtc_lock); + for (i = 0; i < NVRAM_BYTES; ++i) + contents[i] = __nvram_read_byte(i); + spin_unlock_irq(&rtc_lock); + + atari_nvram_proc_read(contents, seq, offset); + + return 0; +} + +static int __init atari_nvram_init(void) +{ + if (!(MACH_IS_ATARI && ATARIHW_PRESENT(TT_CLK))) + return -ENODEV; + + if (!proc_create_single("driver/nvram", 0, NULL, nvram_proc_read)) { + pr_err("nvram: can't create /proc/driver/nvram\n"); + return -ENOMEM; + } + + return 0; +} +device_initcall(atari_nvram_init); +#endif /* CONFIG_PROC_FS */ diff --git a/arch/m68k/include/asm/atarihw.h b/arch/m68k/include/asm/atarihw.h index 9000b249d225..533008262b69 100644 --- a/arch/m68k/include/asm/atarihw.h +++ b/arch/m68k/include/asm/atarihw.h @@ -33,6 +33,12 @@ extern int atari_dont_touch_floppy_select; extern int atari_SCC_reset_done; +extern ssize_t atari_nvram_read(char *, size_t, loff_t *); +extern ssize_t atari_nvram_write(char *, size_t, loff_t *); +extern ssize_t atari_nvram_get_size(void); +extern long atari_nvram_set_checksum(void); +extern long atari_nvram_initialize(void); + /* convenience macros for testing machine type */ #define MACH_IS_ST ((atari_mch_cookie >> 16) == ATARI_MCH_ST) #define MACH_IS_STE ((atari_mch_cookie >> 16) == ATARI_MCH_STE && \ diff --git a/arch/m68k/include/asm/macintosh.h b/arch/m68k/include/asm/macintosh.h index 08cee11180e6..d9a08bed4b12 100644 --- a/arch/m68k/include/asm/macintosh.h +++ b/arch/m68k/include/asm/macintosh.h @@ -19,6 +19,10 @@ extern void mac_init_IRQ(void); extern void mac_irq_enable(struct irq_data *data); extern void mac_irq_disable(struct irq_data *data); +extern unsigned char mac_pram_read_byte(int); +extern void mac_pram_write_byte(unsigned char, int); +extern ssize_t mac_pram_get_size(void); + /* * Macintosh Table */ diff --git a/arch/m68k/kernel/setup_mm.c b/arch/m68k/kernel/setup_mm.c index ad0195cbe042..528484feff80 100644 --- a/arch/m68k/kernel/setup_mm.c +++ b/arch/m68k/kernel/setup_mm.c @@ -24,6 +24,7 @@ #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/module.h> +#include <linux/nvram.h> #include <linux/initrd.h> #include <asm/bootinfo.h> @@ -37,13 +38,14 @@ #ifdef CONFIG_AMIGA #include <asm/amigahw.h> #endif -#ifdef CONFIG_ATARI #include <asm/atarihw.h> +#ifdef CONFIG_ATARI #include <asm/atari_stram.h> #endif #ifdef CONFIG_SUN3X #include <asm/dvma.h> #endif +#include <asm/macintosh.h> #include <asm/natfeat.h> #if !FPSTATESIZE || !NR_IRQS @@ -547,3 +549,81 @@ static int __init adb_probe_sync_enable (char *str) { __setup("adb_sync", adb_probe_sync_enable); #endif /* CONFIG_ADB */ + +#if IS_ENABLED(CONFIG_NVRAM) +#ifdef CONFIG_MAC +static unsigned char m68k_nvram_read_byte(int addr) +{ + if (MACH_IS_MAC) + return mac_pram_read_byte(addr); + return 0xff; +} + +static void m68k_nvram_write_byte(unsigned char val, int addr) +{ + if (MACH_IS_MAC) + mac_pram_write_byte(val, addr); +} +#endif /* CONFIG_MAC */ + +#ifdef CONFIG_ATARI +static ssize_t m68k_nvram_read(char *buf, size_t count, loff_t *ppos) +{ + if (MACH_IS_ATARI) + return atari_nvram_read(buf, count, ppos); + else if (MACH_IS_MAC) + return nvram_read_bytes(buf, count, ppos); + return -EINVAL; +} + +static ssize_t m68k_nvram_write(char *buf, size_t count, loff_t *ppos) +{ + if (MACH_IS_ATARI) + return atari_nvram_write(buf, count, ppos); + else if (MACH_IS_MAC) + return nvram_write_bytes(buf, count, ppos); + return -EINVAL; +} + +static long m68k_nvram_set_checksum(void) +{ + if (MACH_IS_ATARI) + return atari_nvram_set_checksum(); + return -EINVAL; +} + +static long m68k_nvram_initialize(void) +{ + if (MACH_IS_ATARI) + return atari_nvram_initialize(); + return -EINVAL; +} +#endif /* CONFIG_ATARI */ + +static ssize_t m68k_nvram_get_size(void) +{ + if (MACH_IS_ATARI) + return atari_nvram_get_size(); + else if (MACH_IS_MAC) + return mac_pram_get_size(); + return -ENODEV; +} + +/* Atari device drivers call .read (to get checksum validation) whereas + * Mac and PowerMac device drivers just use .read_byte. + */ +const struct nvram_ops arch_nvram_ops = { +#ifdef CONFIG_MAC + .read_byte = m68k_nvram_read_byte, + .write_byte = m68k_nvram_write_byte, +#endif +#ifdef CONFIG_ATARI + .read = m68k_nvram_read, + .write = m68k_nvram_write, + .set_checksum = m68k_nvram_set_checksum, + .initialize = m68k_nvram_initialize, +#endif + .get_size = m68k_nvram_get_size, +}; +EXPORT_SYMBOL(arch_nvram_ops); +#endif /* CONFIG_NVRAM */ diff --git a/arch/m68k/mac/misc.c b/arch/m68k/mac/misc.c index 1423e1fe0261..90f4e9ca1276 100644 --- a/arch/m68k/mac/misc.c +++ b/arch/m68k/mac/misc.c @@ -36,8 +36,9 @@ static void (*rom_reset)(void); +#if IS_ENABLED(CONFIG_NVRAM) #ifdef CONFIG_ADB_CUDA -static __u8 cuda_read_pram(int offset) +static unsigned char cuda_pram_read_byte(int offset) { struct adb_request req; @@ -49,7 +50,7 @@ static __u8 cuda_read_pram(int offset) return req.reply[3]; } -static void cuda_write_pram(int offset, __u8 data) +static void cuda_pram_write_byte(unsigned char data, int offset) { struct adb_request req; @@ -62,29 +63,29 @@ static void cuda_write_pram(int offset, __u8 data) #endif /* CONFIG_ADB_CUDA */ #ifdef CONFIG_ADB_PMU -static __u8 pmu_read_pram(int offset) +static unsigned char pmu_pram_read_byte(int offset) { struct adb_request req; - if (pmu_request(&req, NULL, 3, PMU_READ_NVRAM, - (offset >> 8) & 0xFF, offset & 0xFF) < 0) + if (pmu_request(&req, NULL, 3, PMU_READ_XPRAM, + offset & 0xFF, 1) < 0) return 0; - while (!req.complete) - pmu_poll(); - return req.reply[3]; + pmu_wait_complete(&req); + + return req.reply[0]; } -static void pmu_write_pram(int offset, __u8 data) +static void pmu_pram_write_byte(unsigned char data, int offset) { struct adb_request req; - if (pmu_request(&req, NULL, 4, PMU_WRITE_NVRAM, - (offset >> 8) & 0xFF, offset & 0xFF, data) < 0) + if (pmu_request(&req, NULL, 4, PMU_WRITE_XPRAM, + offset & 0xFF, 1, data) < 0) return; - while (!req.complete) - pmu_poll(); + pmu_wait_complete(&req); } #endif /* CONFIG_ADB_PMU */ +#endif /* CONFIG_NVRAM */ /* * VIA PRAM/RTC access routines @@ -93,7 +94,7 @@ static void pmu_write_pram(int offset, __u8 data) * the RTC should be enabled. */ -static __u8 via_pram_readbyte(void) +static __u8 via_rtc_recv(void) { int i, reg; __u8 data; @@ -120,7 +121,7 @@ static __u8 via_pram_readbyte(void) return data; } -static void via_pram_writebyte(__u8 data) +static void via_rtc_send(__u8 data) { int i, reg, bit; @@ -137,6 +138,31 @@ static void via_pram_writebyte(__u8 data) } /* + * These values can be found in Inside Macintosh vol. III ch. 2 + * which has a description of the RTC chip in the original Mac. + */ + +#define RTC_FLG_READ BIT(7) +#define RTC_FLG_WRITE_PROTECT BIT(7) +#define RTC_CMD_READ(r) (RTC_FLG_READ | (r << 2)) +#define RTC_CMD_WRITE(r) (r << 2) +#define RTC_REG_SECONDS_0 0 +#define RTC_REG_SECONDS_1 1 +#define RTC_REG_SECONDS_2 2 +#define RTC_REG_SECONDS_3 3 +#define RTC_REG_WRITE_PROTECT 13 + +/* + * Inside Mac has no information about two-byte RTC commands but + * the MAME/MESS source code has the essentials. + */ + +#define RTC_REG_XPRAM 14 +#define RTC_CMD_XPRAM_READ (RTC_CMD_READ(RTC_REG_XPRAM) << 8) +#define RTC_CMD_XPRAM_WRITE (RTC_CMD_WRITE(RTC_REG_XPRAM) << 8) +#define RTC_CMD_XPRAM_ARG(a) (((a & 0xE0) << 3) | ((a & 0x1F) << 2)) + +/* * Execute a VIA PRAM/RTC command. For read commands * data should point to a one-byte buffer for the * resulting data. For write commands it should point @@ -145,29 +171,33 @@ static void via_pram_writebyte(__u8 data) * This function disables all interrupts while running. */ -static void via_pram_command(int command, __u8 *data) +static void via_rtc_command(int command, __u8 *data) { unsigned long flags; int is_read; local_irq_save(flags); + /* The least significant bits must be 0b01 according to Inside Mac */ + + command = (command & ~3) | 1; + /* Enable the RTC and make sure the strobe line is high */ via1[vBufB] = (via1[vBufB] | VIA1B_vRTCClk) & ~VIA1B_vRTCEnb; if (command & 0xFF00) { /* extended (two-byte) command */ - via_pram_writebyte((command & 0xFF00) >> 8); - via_pram_writebyte(command & 0xFF); - is_read = command & 0x8000; + via_rtc_send((command & 0xFF00) >> 8); + via_rtc_send(command & 0xFF); + is_read = command & (RTC_FLG_READ << 8); } else { /* one-byte command */ - via_pram_writebyte(command); - is_read = command & 0x80; + via_rtc_send(command); + is_read = command & RTC_FLG_READ; } if (is_read) { - *data = via_pram_readbyte(); + *data = via_rtc_recv(); } else { - via_pram_writebyte(*data); + via_rtc_send(*data); } /* All done, disable the RTC */ @@ -177,14 +207,30 @@ static void via_pram_command(int command, __u8 *data) local_irq_restore(flags); } -static __u8 via_read_pram(int offset) +#if IS_ENABLED(CONFIG_NVRAM) +static unsigned char via_pram_read_byte(int offset) { - return 0; + unsigned char temp; + + via_rtc_command(RTC_CMD_XPRAM_READ | RTC_CMD_XPRAM_ARG(offset), &temp); + + return temp; } -static void via_write_pram(int offset, __u8 data) +static void via_pram_write_byte(unsigned char data, int offset) { + unsigned char temp; + + temp = 0x55; + via_rtc_command(RTC_CMD_WRITE(RTC_REG_WRITE_PROTECT), &temp); + + temp = data; + via_rtc_command(RTC_CMD_XPRAM_WRITE | RTC_CMD_XPRAM_ARG(offset), &temp); + + temp = 0x55 | RTC_FLG_WRITE_PROTECT; + via_rtc_command(RTC_CMD_WRITE(RTC_REG_WRITE_PROTECT), &temp); } +#endif /* CONFIG_NVRAM */ /* * Return the current time in seconds since January 1, 1904. @@ -201,10 +247,10 @@ static time64_t via_read_time(void) } result, last_result; int count = 1; - via_pram_command(0x81, &last_result.cdata[3]); - via_pram_command(0x85, &last_result.cdata[2]); - via_pram_command(0x89, &last_result.cdata[1]); - via_pram_command(0x8D, &last_result.cdata[0]); + via_rtc_command(RTC_CMD_READ(RTC_REG_SECONDS_0), &last_result.cdata[3]); + via_rtc_command(RTC_CMD_READ(RTC_REG_SECONDS_1), &last_result.cdata[2]); + via_rtc_command(RTC_CMD_READ(RTC_REG_SECONDS_2), &last_result.cdata[1]); + via_rtc_command(RTC_CMD_READ(RTC_REG_SECONDS_3), &last_result.cdata[0]); /* * The NetBSD guys say to loop until you get the same reading @@ -212,10 +258,14 @@ static time64_t via_read_time(void) */ while (1) { - via_pram_command(0x81, &result.cdata[3]); - via_pram_command(0x85, &result.cdata[2]); - via_pram_command(0x89, &result.cdata[1]); - via_pram_command(0x8D, &result.cdata[0]); + via_rtc_command(RTC_CMD_READ(RTC_REG_SECONDS_0), + &result.cdata[3]); + via_rtc_command(RTC_CMD_READ(RTC_REG_SECONDS_1), + &result.cdata[2]); + via_rtc_command(RTC_CMD_READ(RTC_REG_SECONDS_2), + &result.cdata[1]); + via_rtc_command(RTC_CMD_READ(RTC_REG_SECONDS_3), + &result.cdata[0]); if (result.idata == last_result.idata) return (time64_t)result.idata - RTC_OFFSET; @@ -254,18 +304,18 @@ static void via_set_rtc_time(struct rtc_time *tm) /* Clear the write protect bit */ temp = 0x55; - via_pram_command(0x35, &temp); + via_rtc_command(RTC_CMD_WRITE(RTC_REG_WRITE_PROTECT), &temp); data.idata = lower_32_bits(time + RTC_OFFSET); - via_pram_command(0x01, &data.cdata[3]); - via_pram_command(0x05, &data.cdata[2]); - via_pram_command(0x09, &data.cdata[1]); - via_pram_command(0x0D, &data.cdata[0]); + via_rtc_command(RTC_CMD_WRITE(RTC_REG_SECONDS_0), &data.cdata[3]); + via_rtc_command(RTC_CMD_WRITE(RTC_REG_SECONDS_1), &data.cdata[2]); + via_rtc_command(RTC_CMD_WRITE(RTC_REG_SECONDS_2), &data.cdata[1]); + via_rtc_command(RTC_CMD_WRITE(RTC_REG_SECONDS_3), &data.cdata[0]); /* Set the write protect bit */ - temp = 0xD5; - via_pram_command(0x35, &temp); + temp = 0x55 | RTC_FLG_WRITE_PROTECT; + via_rtc_command(RTC_CMD_WRITE(RTC_REG_WRITE_PROTECT), &temp); } static void via_shutdown(void) @@ -326,66 +376,58 @@ static void cuda_shutdown(void) *------------------------------------------------------------------- */ -void mac_pram_read(int offset, __u8 *buffer, int len) +#if IS_ENABLED(CONFIG_NVRAM) +unsigned char mac_pram_read_byte(int addr) { - __u8 (*func)(int); - int i; - switch (macintosh_config->adb_type) { case MAC_ADB_IOP: case MAC_ADB_II: case MAC_ADB_PB1: - func = via_read_pram; - break; + return via_pram_read_byte(addr); #ifdef CONFIG_ADB_CUDA case MAC_ADB_EGRET: case MAC_ADB_CUDA: - func = cuda_read_pram; - break; + return cuda_pram_read_byte(addr); #endif #ifdef CONFIG_ADB_PMU case MAC_ADB_PB2: - func = pmu_read_pram; - break; + return pmu_pram_read_byte(addr); #endif default: - return; - } - for (i = 0 ; i < len ; i++) { - buffer[i] = (*func)(offset++); + return 0xFF; } } -void mac_pram_write(int offset, __u8 *buffer, int len) +void mac_pram_write_byte(unsigned char val, int addr) { - void (*func)(int, __u8); - int i; - switch (macintosh_config->adb_type) { case MAC_ADB_IOP: case MAC_ADB_II: case MAC_ADB_PB1: - func = via_write_pram; + via_pram_write_byte(val, addr); break; #ifdef CONFIG_ADB_CUDA case MAC_ADB_EGRET: case MAC_ADB_CUDA: - func = cuda_write_pram; + cuda_pram_write_byte(val, addr); break; #endif #ifdef CONFIG_ADB_PMU case MAC_ADB_PB2: - func = pmu_write_pram; + pmu_pram_write_byte(val, addr); break; #endif default: - return; - } - for (i = 0 ; i < len ; i++) { - (*func)(offset++, buffer[i]); + break; } } +ssize_t mac_pram_get_size(void) +{ + return 256; +} +#endif /* CONFIG_NVRAM */ + void mac_poweroff(void) { if (oss_present) { |