spapr: Fix implementation of Open Firmware client interface

This addresses the comments from v22.

The functional changes are (the VOF ones need retesting with Pegasos2):

(VOF) setprop will start failing if the machine class callback
did not handle it;
(VOF) unit addresses are lowered in path_offset();
(SPAPR) /chosen/bootargs is initialized from kernel_cmdline if
the client did not change it.

Fixes: 5c991e5d4378 ("spapr: Implement Open Firmware client interface")
Cc: BALATON Zoltan <balaton@eik.bme.hu>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-Id: <20210708065625.548396-1-aik@ozlabs.ru>
Tested-by: BALATON Zoltan <balaton@eik.bme.hu>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

4 files changed, 2 insertions, 30 deletions

diff --git a/pc-bios/vof/ci.c b/pc-bios/vof/ci.c
index 2b56050..fc4821b 100644
--- a/pc-bios/vof/ci.c
+++ b/pc-bios/vof/ci.c
@@ -69,7 +69,7 @@ static int call_ci(const char *service, int nargs, int nret, ...)
     }
 
     if (ci_entry((uint32_t)(&args)) < 0) {
-        return PROM_ERROR;
+        return -1;
     }
 
     return (nret > 0) ? args.args[nargs] : 0;
diff --git a/pc-bios/vof/libc.c b/pc-bios/vof/libc.c
index 00c10e6..fdbc30f 100644
--- a/pc-bios/vof/libc.c
+++ b/pc-bios/vof/libc.c
@@ -54,32 +54,6 @@ int memcmp(const void *ptr1, const void *ptr2, size_t n)
     return 0;
 }
 
-void *memmove(void *dest, const void *src, size_t n)
-{
-    char *cdest;
-    const char *csrc;
-    int i;
-
-    /* Do the buffers overlap in a bad way? */
-    if (src < dest && src + n >= dest) {
-        /* Copy from end to start */
-        cdest = dest + n - 1;
-        csrc = src + n - 1;
-        for (i = 0; i < n; i++) {
-            *cdest-- = *csrc--;
-        }
-    } else {
-        /* Normal copy is possible */
-        cdest = dest;
-        csrc = src;
-        for (i = 0; i < n; i++) {
-            *cdest++ = *csrc++;
-        }
-    }
-
-    return dest;
-}
-
 void *memset(void *dest, int c, size_t size)
 {
     unsigned char *d = (unsigned char *)dest;
diff --git a/pc-bios/vof/main.c b/pc-bios/vof/main.c
index 9fc30d2..0f0f6b4 100644
--- a/pc-bios/vof/main.c
+++ b/pc-bios/vof/main.c
@@ -6,7 +6,7 @@ void do_boot(unsigned long addr, unsigned long _r3, unsigned long _r4)
     register unsigned long r4 __asm__("r4") = _r4;
     register unsigned long r5 __asm__("r5") = (unsigned long) _prom_entry;
 
-    ((client *)(uint32_t)addr)();
+    ((void (*)(void))(uint32_t)addr)();
 }
 
 void entry_c(void)
diff --git a/pc-bios/vof/vof.h b/pc-bios/vof/vof.h
index 2d89580..5f12c07 100644
--- a/pc-bios/vof/vof.h
+++ b/pc-bios/vof/vof.h
@@ -10,11 +10,9 @@ typedef unsigned short uint16_t;
 typedef unsigned long uint32_t;
 typedef unsigned long long uint64_t;
 #define NULL (0)
-#define PROM_ERROR (-1u)
 typedef unsigned long ihandle;
 typedef unsigned long phandle;
 typedef int size_t;
-typedef void client(void);
 
 /* globals */
 extern void _prom_entry(void); /* OF CI entry point (i.e. this firmware) */