[PATCH v9 17/22] powerpc: Define missing ppc_md.nvram_size for CHRP and PowerMac

Finn Thain
2019-01-15T04:23:24Z

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>
---
Changed since v8:
- Renamed functions to correspond with ppc_md member names.
---
arch/powerpc/platforms/chrp/nvram.c | 14 ++++++++++----
arch/powerpc/platforms/powermac/nvram.c | 9 +++++++++
2 files changed, 19 insertions(+), 4 deletions(-)

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/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");
--
2.19.2