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-rw-r--r--arch/powerpc/Kconfig6
-rw-r--r--arch/powerpc/include/asm/io.h2
-rw-r--r--arch/powerpc/include/asm/nvram.h9
-rw-r--r--arch/powerpc/kernel/nvram_64.c158
-rw-r--r--arch/powerpc/kernel/setup_32.c36
-rw-r--r--arch/powerpc/platforms/chrp/Makefile2
-rw-r--r--arch/powerpc/platforms/chrp/nvram.c14
-rw-r--r--arch/powerpc/platforms/chrp/setup.c2
-rw-r--r--arch/powerpc/platforms/powermac/Makefile2
-rw-r--r--arch/powerpc/platforms/powermac/nvram.c9
-rw-r--r--arch/powerpc/platforms/powermac/setup.c3
-rw-r--r--arch/powerpc/platforms/powermac/time.c2
-rw-r--r--arch/powerpc/platforms/pseries/nvram.c2
13 files changed, 29 insertions, 218 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 375d0dc0dc7d..7deb3ea2dd3f 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -179,6 +179,7 @@ config PPC
select HAVE_ARCH_KGDB
select HAVE_ARCH_MMAP_RND_BITS
select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
+ select HAVE_ARCH_NVRAM_OPS
select HAVE_ARCH_SECCOMP_FILTER
select HAVE_ARCH_TRACEHOOK
select HAVE_CBPF_JIT if !PPC64
@@ -275,11 +276,6 @@ config SYSVIPC_COMPAT
depends on COMPAT && SYSVIPC
default y
-# All PPC32s use generic nvram driver through ppc_md
-config GENERIC_NVRAM
- bool
- default y if PPC32
-
config SCHED_OMIT_FRAME_POINTER
bool
default y
diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index 7f19fbd3ba55..4b73847e9b95 100644
--- a/arch/powerpc/include/asm/io.h
+++ b/arch/powerpc/include/asm/io.h
@@ -783,8 +783,10 @@ extern void __iounmap_at(void *ea, unsigned long size);
#define mmio_read16be(addr) readw_be(addr)
#define mmio_read32be(addr) readl_be(addr)
+#define mmio_read64be(addr) readq_be(addr)
#define mmio_write16be(val, addr) writew_be(val, addr)
#define mmio_write32be(val, addr) writel_be(val, addr)
+#define mmio_write64be(val, addr) writeq_be(val, addr)
#define mmio_insb(addr, dst, count) readsb(addr, dst, count)
#define mmio_insw(addr, dst, count) readsw(addr, dst, count)
#define mmio_insl(addr, dst, count) readsl(addr, dst, count)
diff --git a/arch/powerpc/include/asm/nvram.h b/arch/powerpc/include/asm/nvram.h
index 09a518bb7c03..629a5cdcc865 100644
--- a/arch/powerpc/include/asm/nvram.h
+++ b/arch/powerpc/include/asm/nvram.h
@@ -78,9 +78,6 @@ extern int pmac_get_partition(int partition);
extern u8 pmac_xpram_read(int xpaddr);
extern void pmac_xpram_write(int xpaddr, u8 data);
-/* Synchronize NVRAM */
-extern void nvram_sync(void);
-
/* Initialize NVRAM OS partition */
extern int __init nvram_init_os_partition(struct nvram_os_partition *part);
@@ -98,10 +95,4 @@ extern int nvram_write_os_partition(struct nvram_os_partition *part,
unsigned int err_type,
unsigned int error_log_cnt);
-/* Determine NVRAM size */
-extern ssize_t nvram_get_size(void);
-
-/* Normal access to NVRAM */
-extern unsigned char nvram_read_byte(int i);
-extern void nvram_write_byte(unsigned char c, int i);
#endif /* _ASM_POWERPC_NVRAM_H */
diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c
index 38b03a330cd2..244d2462e781 100644
--- a/arch/powerpc/kernel/nvram_64.c
+++ b/arch/powerpc/kernel/nvram_64.c
@@ -7,12 +7,6 @@
* 2 of the License, or (at your option) any later version.
*
* /dev/nvram driver for PPC64
- *
- * This perhaps should live in drivers/char
- *
- * TODO: Split the /dev/nvram part (that one can use
- * drivers/char/generic_nvram.c) from the arch & partition
- * parsing code.
*/
#include <linux/types.h>
@@ -714,137 +708,6 @@ static void oops_to_nvram(struct kmsg_dumper *dumper,
spin_unlock_irqrestore(&lock, flags);
}
-static loff_t dev_nvram_llseek(struct file *file, loff_t offset, int origin)
-{
- if (ppc_md.nvram_size == NULL)
- return -ENODEV;
- return generic_file_llseek_size(file, offset, origin, MAX_LFS_FILESIZE,
- ppc_md.nvram_size());
-}
-
-
-static ssize_t dev_nvram_read(struct file *file, char __user *buf,
- size_t count, loff_t *ppos)
-{
- ssize_t ret;
- char *tmp = NULL;
- ssize_t size;
-
- if (!ppc_md.nvram_size) {
- ret = -ENODEV;
- goto out;
- }
-
- size = ppc_md.nvram_size();
- if (size < 0) {
- ret = size;
- goto out;
- }
-
- if (*ppos >= size) {
- ret = 0;
- goto out;
- }
-
- count = min_t(size_t, count, size - *ppos);
- count = min(count, PAGE_SIZE);
-
- tmp = kmalloc(count, GFP_KERNEL);
- if (!tmp) {
- ret = -ENOMEM;
- goto out;
- }
-
- ret = ppc_md.nvram_read(tmp, count, ppos);
- if (ret <= 0)
- goto out;
-
- if (copy_to_user(buf, tmp, ret))
- ret = -EFAULT;
-
-out:
- kfree(tmp);
- return ret;
-
-}
-
-static ssize_t dev_nvram_write(struct file *file, const char __user *buf,
- size_t count, loff_t *ppos)
-{
- ssize_t ret;
- char *tmp = NULL;
- ssize_t size;
-
- ret = -ENODEV;
- if (!ppc_md.nvram_size)
- goto out;
-
- ret = 0;
- size = ppc_md.nvram_size();
- if (*ppos >= size || size < 0)
- goto out;
-
- count = min_t(size_t, count, size - *ppos);
- count = min(count, PAGE_SIZE);
-
- tmp = memdup_user(buf, count);
- if (IS_ERR(tmp)) {
- ret = PTR_ERR(tmp);
- goto out;
- }
-
- ret = ppc_md.nvram_write(tmp, count, ppos);
-
- kfree(tmp);
-out:
- return ret;
-}
-
-static long dev_nvram_ioctl(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- switch(cmd) {
-#ifdef CONFIG_PPC_PMAC
- case OBSOLETE_PMAC_NVRAM_GET_OFFSET:
- printk(KERN_WARNING "nvram: Using obsolete PMAC_NVRAM_GET_OFFSET ioctl\n");
- /* fall through */
- case IOC_NVRAM_GET_OFFSET: {
- int part, offset;
-
- if (!machine_is(powermac))
- return -EINVAL;
- if (copy_from_user(&part, (void __user*)arg, sizeof(part)) != 0)
- return -EFAULT;
- if (part < pmac_nvram_OF || part > pmac_nvram_NR)
- return -EINVAL;
- offset = pmac_get_partition(part);
- if (offset < 0)
- return offset;
- if (copy_to_user((void __user*)arg, &offset, sizeof(offset)) != 0)
- return -EFAULT;
- return 0;
- }
-#endif /* CONFIG_PPC_PMAC */
- default:
- return -EINVAL;
- }
-}
-
-static const struct file_operations nvram_fops = {
- .owner = THIS_MODULE,
- .llseek = dev_nvram_llseek,
- .read = dev_nvram_read,
- .write = dev_nvram_write,
- .unlocked_ioctl = dev_nvram_ioctl,
-};
-
-static struct miscdevice nvram_dev = {
- NVRAM_MINOR,
- "nvram",
- &nvram_fops
-};
-
-
#ifdef DEBUG_NVRAM
static void __init nvram_print_partitions(char * label)
{
@@ -992,6 +855,8 @@ loff_t __init nvram_create_partition(const char *name, int sig,
long size = 0;
int rc;
+ BUILD_BUG_ON(NVRAM_BLOCK_LEN != 16);
+
/* Convert sizes from bytes to blocks */
req_size = _ALIGN_UP(req_size, NVRAM_BLOCK_LEN) / NVRAM_BLOCK_LEN;
min_size = _ALIGN_UP(min_size, NVRAM_BLOCK_LEN) / NVRAM_BLOCK_LEN;
@@ -1192,22 +1057,3 @@ int __init nvram_scan_partitions(void)
kfree(header);
return err;
}
-
-static int __init nvram_init(void)
-{
- int rc;
-
- BUILD_BUG_ON(NVRAM_BLOCK_LEN != 16);
-
- if (ppc_md.nvram_size == NULL || ppc_md.nvram_size() <= 0)
- return -ENODEV;
-
- rc = misc_register(&nvram_dev);
- if (rc != 0) {
- printk(KERN_ERR "nvram_init: failed to register device\n");
- return rc;
- }
-
- return rc;
-}
-device_initcall(nvram_init);
diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index 947f904688b0..c31082233a25 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -17,6 +17,7 @@
#include <linux/console.h>
#include <linux/memblock.h>
#include <linux/export.h>
+#include <linux/nvram.h>
#include <asm/io.h>
#include <asm/prom.h>
@@ -147,41 +148,6 @@ static int __init ppc_setup_l3cr(char *str)
}
__setup("l3cr=", ppc_setup_l3cr);
-#ifdef CONFIG_GENERIC_NVRAM
-
-/* Generic nvram hooks used by drivers/char/gen_nvram.c */
-unsigned char nvram_read_byte(int addr)
-{
- if (ppc_md.nvram_read_val)
- return ppc_md.nvram_read_val(addr);
- return 0xff;
-}
-EXPORT_SYMBOL(nvram_read_byte);
-
-void nvram_write_byte(unsigned char val, int addr)
-{
- if (ppc_md.nvram_write_val)
- ppc_md.nvram_write_val(addr, val);
-}
-EXPORT_SYMBOL(nvram_write_byte);
-
-ssize_t nvram_get_size(void)
-{
- if (ppc_md.nvram_size)
- return ppc_md.nvram_size();
- return -1;
-}
-EXPORT_SYMBOL(nvram_get_size);
-
-void nvram_sync(void)
-{
- if (ppc_md.nvram_sync)
- ppc_md.nvram_sync();
-}
-EXPORT_SYMBOL(nvram_sync);
-
-#endif /* CONFIG_NVRAM */
-
static int __init ppc_init(void)
{
/* clear the progress line */
diff --git a/arch/powerpc/platforms/chrp/Makefile b/arch/powerpc/platforms/chrp/Makefile
index 4b3bfadc70fa..dc3465cc8bc6 100644
--- a/arch/powerpc/platforms/chrp/Makefile
+++ b/arch/powerpc/platforms/chrp/Makefile
@@ -1,3 +1,3 @@
obj-y += setup.o time.o pegasos_eth.o pci.o
obj-$(CONFIG_SMP) += smp.o
-obj-$(CONFIG_NVRAM) += nvram.o
+obj-$(CONFIG_NVRAM:m=y) += nvram.o
diff --git a/arch/powerpc/platforms/chrp/nvram.c b/arch/powerpc/platforms/chrp/nvram.c
index 791b86398e1d..37ac20ccbb19 100644
--- a/arch/powerpc/platforms/chrp/nvram.c
+++ b/arch/powerpc/platforms/chrp/nvram.c
@@ -24,7 +24,7 @@ static unsigned int nvram_size;
static unsigned char nvram_buf[4];
static DEFINE_SPINLOCK(nvram_lock);
-static unsigned char chrp_nvram_read(int addr)
+static unsigned char chrp_nvram_read_val(int addr)
{
unsigned int done;
unsigned long flags;
@@ -46,7 +46,7 @@ static unsigned char chrp_nvram_read(int addr)
return ret;
}
-static void chrp_nvram_write(int addr, unsigned char val)
+static void chrp_nvram_write_val(int addr, unsigned char val)
{
unsigned int done;
unsigned long flags;
@@ -64,6 +64,11 @@ static void chrp_nvram_write(int addr, unsigned char val)
spin_unlock_irqrestore(&nvram_lock, flags);
}
+static ssize_t chrp_nvram_size(void)
+{
+ return nvram_size;
+}
+
void __init chrp_nvram_init(void)
{
struct device_node *nvram;
@@ -85,8 +90,9 @@ void __init chrp_nvram_init(void)
printk(KERN_INFO "CHRP nvram contains %u bytes\n", nvram_size);
of_node_put(nvram);
- ppc_md.nvram_read_val = chrp_nvram_read;
- ppc_md.nvram_write_val = chrp_nvram_write;
+ ppc_md.nvram_read_val = chrp_nvram_read_val;
+ ppc_md.nvram_write_val = chrp_nvram_write_val;
+ ppc_md.nvram_size = chrp_nvram_size;
return;
}
diff --git a/arch/powerpc/platforms/chrp/setup.c b/arch/powerpc/platforms/chrp/setup.c
index 9438fa0fc355..fcf6f2342ef4 100644
--- a/arch/powerpc/platforms/chrp/setup.c
+++ b/arch/powerpc/platforms/chrp/setup.c
@@ -549,7 +549,7 @@ static void __init chrp_init_IRQ(void)
static void __init
chrp_init2(void)
{
-#ifdef CONFIG_NVRAM
+#if IS_ENABLED(CONFIG_NVRAM)
chrp_nvram_init();
#endif
diff --git a/arch/powerpc/platforms/powermac/Makefile b/arch/powerpc/platforms/powermac/Makefile
index 923bfb340433..20ebf35d7913 100644
--- a/arch/powerpc/platforms/powermac/Makefile
+++ b/arch/powerpc/platforms/powermac/Makefile
@@ -15,7 +15,5 @@ obj-$(CONFIG_PMAC_BACKLIGHT) += backlight.o
# need this to be a bool. Cheat here and pretend CONFIG_NVRAM=m is really
# CONFIG_NVRAM=y
obj-$(CONFIG_NVRAM:m=y) += nvram.o
-# ppc64 pmac doesn't define CONFIG_NVRAM but needs nvram stuff
-obj-$(CONFIG_PPC64) += nvram.o
obj-$(CONFIG_PPC32) += bootx_init.o
obj-$(CONFIG_SMP) += smp.o
diff --git a/arch/powerpc/platforms/powermac/nvram.c b/arch/powerpc/platforms/powermac/nvram.c
index ae54d7fe68f3..9360cdc408c1 100644
--- a/arch/powerpc/platforms/powermac/nvram.c
+++ b/arch/powerpc/platforms/powermac/nvram.c
@@ -147,6 +147,11 @@ static ssize_t core99_nvram_size(void)
static volatile unsigned char __iomem *nvram_addr;
static int nvram_mult;
+static ssize_t ppc32_nvram_size(void)
+{
+ return NVRAM_SIZE;
+}
+
static unsigned char direct_nvram_read_byte(int addr)
{
return in_8(&nvram_data[(addr & (NVRAM_SIZE - 1)) * nvram_mult]);
@@ -590,21 +595,25 @@ int __init pmac_nvram_init(void)
nvram_mult = 1;
ppc_md.nvram_read_val = direct_nvram_read_byte;
ppc_md.nvram_write_val = direct_nvram_write_byte;
+ ppc_md.nvram_size = ppc32_nvram_size;
} else if (nvram_naddrs == 1) {
nvram_data = ioremap(r1.start, s1);
nvram_mult = (s1 + NVRAM_SIZE - 1) / NVRAM_SIZE;
ppc_md.nvram_read_val = direct_nvram_read_byte;
ppc_md.nvram_write_val = direct_nvram_write_byte;
+ ppc_md.nvram_size = ppc32_nvram_size;
} else if (nvram_naddrs == 2) {
nvram_addr = ioremap(r1.start, s1);
nvram_data = ioremap(r2.start, s2);
ppc_md.nvram_read_val = indirect_nvram_read_byte;
ppc_md.nvram_write_val = indirect_nvram_write_byte;
+ ppc_md.nvram_size = ppc32_nvram_size;
} else if (nvram_naddrs == 0 && sys_ctrler == SYS_CTRLER_PMU) {
#ifdef CONFIG_ADB_PMU
nvram_naddrs = -1;
ppc_md.nvram_read_val = pmu_nvram_read_byte;
ppc_md.nvram_write_val = pmu_nvram_write_byte;
+ ppc_md.nvram_size = ppc32_nvram_size;
#endif /* CONFIG_ADB_PMU */
} else {
printk(KERN_ERR "Incompatible type of NVRAM\n");
diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c
index 2e8221e20ee8..b7efcf336589 100644
--- a/arch/powerpc/platforms/powermac/setup.c
+++ b/arch/powerpc/platforms/powermac/setup.c
@@ -316,8 +316,7 @@ static void __init pmac_setup_arch(void)
find_via_pmu();
smu_init();
-#if defined(CONFIG_NVRAM) || defined(CONFIG_NVRAM_MODULE) || \
- defined(CONFIG_PPC64)
+#if IS_ENABLED(CONFIG_NVRAM)
pmac_nvram_init();
#endif
#ifdef CONFIG_PPC32
diff --git a/arch/powerpc/platforms/powermac/time.c b/arch/powerpc/platforms/powermac/time.c
index f157e3d071f2..b36ddee17c87 100644
--- a/arch/powerpc/platforms/powermac/time.c
+++ b/arch/powerpc/platforms/powermac/time.c
@@ -68,7 +68,7 @@
long __init pmac_time_init(void)
{
s32 delta = 0;
-#ifdef CONFIG_NVRAM
+#if defined(CONFIG_NVRAM) && defined(CONFIG_PPC32)
int dst;
delta = ((s32)pmac_xpram_read(PMAC_XPRAM_MACHINE_LOC + 0x9)) << 16;
diff --git a/arch/powerpc/platforms/pseries/nvram.c b/arch/powerpc/platforms/pseries/nvram.c
index 69cedc1b3b8a..1136a38ff039 100644
--- a/arch/powerpc/platforms/pseries/nvram.c
+++ b/arch/powerpc/platforms/pseries/nvram.c
@@ -7,8 +7,6 @@
* 2 of the License, or (at your option) any later version.
*
* /dev/nvram driver for PPC64
- *
- * This perhaps should live in drivers/char
*/
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-20 13:17:46 +0300