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powerpc: Define missing ppc_md.nvram_size for CHRP and PowerMac 

Add the nvram_size() function to those PowerPC platforms that don't already
have one: CHRP and PowerMac. This means that the ppc_md.nvram_size()
function can be called by nvram_get_size().

Since we are addressing CHRP inconsistencies here, rename chrp_nvram_read
and chrp_nvram_write, which break the naming convention used across
powerpc platforms for NVRAM accessor functions.

Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Finn Thain 2019-01-15 15:18:56 +11:00 committed by Greg Kroah-Hartman
parent 7fc0ac05f3
commit ebcebc7f45
2 changed files with 19 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
arch/powerpc/platforms/chrp/nvram.c
View File

@ -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;
}

9
arch/powerpc/platforms/powermac/nvram.c
View File

@ -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");