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Diffstat (limited to 'arch/powerpc/kernel/rtas.c')
-rw-r--r--arch/powerpc/kernel/rtas.c105
1 files changed, 56 insertions, 49 deletions
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 80b5ef403f6..8b4c857c142 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -91,7 +91,7 @@ static void unlock_rtas(unsigned long flags)
* are designed only for very early low-level debugging, which
* is why the token is hard-coded to 10.
*/
-static void call_rtas_display_status(char c)
+static void call_rtas_display_status(unsigned char c)
{
struct rtas_args *args = &rtas.args;
unsigned long s;
@@ -100,11 +100,11 @@ static void call_rtas_display_status(char c)
return;
s = lock_rtas();
- args->token = 10;
- args->nargs = 1;
- args->nret = 1;
- args->rets = (rtas_arg_t *)&(args->args[1]);
- args->args[0] = (unsigned char)c;
+ args->token = cpu_to_be32(10);
+ args->nargs = cpu_to_be32(1);
+ args->nret = cpu_to_be32(1);
+ args->rets = &(args->args[1]);
+ args->args[0] = cpu_to_be32(c);
enter_rtas(__pa(args));
@@ -204,7 +204,7 @@ void rtas_progress(char *s, unsigned short hex)
{
struct device_node *root;
int width;
- const int *p;
+ const __be32 *p;
char *os;
static int display_character, set_indicator;
static int display_width, display_lines, form_feed;
@@ -221,13 +221,13 @@ void rtas_progress(char *s, unsigned short hex)
if ((root = of_find_node_by_path("/rtas"))) {
if ((p = of_get_property(root,
"ibm,display-line-length", NULL)))
- display_width = *p;
+ display_width = be32_to_cpu(*p);
if ((p = of_get_property(root,
"ibm,form-feed", NULL)))
- form_feed = *p;
+ form_feed = be32_to_cpu(*p);
if ((p = of_get_property(root,
"ibm,display-number-of-lines", NULL)))
- display_lines = *p;
+ display_lines = be32_to_cpu(*p);
row_width = of_get_property(root,
"ibm,display-truncation-length", NULL);
of_node_put(root);
@@ -322,11 +322,11 @@ EXPORT_SYMBOL(rtas_progress); /* needed by rtas_flash module */
int rtas_token(const char *service)
{
- const int *tokp;
+ const __be32 *tokp;
if (rtas.dev == NULL)
return RTAS_UNKNOWN_SERVICE;
tokp = of_get_property(rtas.dev, service, NULL);
- return tokp ? *tokp : RTAS_UNKNOWN_SERVICE;
+ return tokp ? be32_to_cpu(*tokp) : RTAS_UNKNOWN_SERVICE;
}
EXPORT_SYMBOL(rtas_token);
@@ -380,11 +380,11 @@ static char *__fetch_rtas_last_error(char *altbuf)
bufsz = rtas_get_error_log_max();
- err_args.token = rtas_last_error_token;
- err_args.nargs = 2;
- err_args.nret = 1;
- err_args.args[0] = (rtas_arg_t)__pa(rtas_err_buf);
- err_args.args[1] = bufsz;
+ err_args.token = cpu_to_be32(rtas_last_error_token);
+ err_args.nargs = cpu_to_be32(2);
+ err_args.nret = cpu_to_be32(1);
+ err_args.args[0] = cpu_to_be32(__pa(rtas_err_buf));
+ err_args.args[1] = cpu_to_be32(bufsz);
err_args.args[2] = 0;
save_args = rtas.args;
@@ -433,13 +433,13 @@ int rtas_call(int token, int nargs, int nret, int *outputs, ...)
s = lock_rtas();
rtas_args = &rtas.args;
- rtas_args->token = token;
- rtas_args->nargs = nargs;
- rtas_args->nret = nret;
- rtas_args->rets = (rtas_arg_t *)&(rtas_args->args[nargs]);
+ rtas_args->token = cpu_to_be32(token);
+ rtas_args->nargs = cpu_to_be32(nargs);
+ rtas_args->nret = cpu_to_be32(nret);
+ rtas_args->rets = &(rtas_args->args[nargs]);
va_start(list, outputs);
for (i = 0; i < nargs; ++i)
- rtas_args->args[i] = va_arg(list, rtas_arg_t);
+ rtas_args->args[i] = cpu_to_be32(va_arg(list, __u32));
va_end(list);
for (i = 0; i < nret; ++i)
@@ -449,13 +449,13 @@ int rtas_call(int token, int nargs, int nret, int *outputs, ...)
/* A -1 return code indicates that the last command couldn't
be completed due to a hardware error. */
- if (rtas_args->rets[0] == -1)
+ if (be32_to_cpu(rtas_args->rets[0]) == -1)
buff_copy = __fetch_rtas_last_error(NULL);
if (nret > 1 && outputs != NULL)
for (i = 0; i < nret-1; ++i)
- outputs[i] = rtas_args->rets[i+1];
- ret = (nret > 0)? rtas_args->rets[0]: 0;
+ outputs[i] = be32_to_cpu(rtas_args->rets[i+1]);
+ ret = (nret > 0)? be32_to_cpu(rtas_args->rets[0]): 0;
unlock_rtas(s);
@@ -588,8 +588,8 @@ bool rtas_indicator_present(int token, int *maxindex)
{
int proplen, count, i;
const struct indicator_elem {
- u32 token;
- u32 maxindex;
+ __be32 token;
+ __be32 maxindex;
} *indicators;
indicators = of_get_property(rtas.dev, "rtas-indicators", &proplen);
@@ -599,10 +599,10 @@ bool rtas_indicator_present(int token, int *maxindex)
count = proplen / sizeof(struct indicator_elem);
for (i = 0; i < count; i++) {
- if (indicators[i].token != token)
+ if (__be32_to_cpu(indicators[i].token) != token)
continue;
if (maxindex)
- *maxindex = indicators[i].maxindex;
+ *maxindex = __be32_to_cpu(indicators[i].maxindex);
return true;
}
@@ -993,32 +993,36 @@ struct pseries_errorlog *get_pseries_errorlog(struct rtas_error_log *log,
(struct rtas_ext_event_log_v6 *)log->buffer;
struct pseries_errorlog *sect;
unsigned char *p, *log_end;
+ uint32_t ext_log_length = rtas_error_extended_log_length(log);
+ uint8_t log_format = rtas_ext_event_log_format(ext_log);
+ uint32_t company_id = rtas_ext_event_company_id(ext_log);
/* Check that we understand the format */
- if (log->extended_log_length < sizeof(struct rtas_ext_event_log_v6) ||
- ext_log->log_format != RTAS_V6EXT_LOG_FORMAT_EVENT_LOG ||
- ext_log->company_id != RTAS_V6EXT_COMPANY_ID_IBM)
+ if (ext_log_length < sizeof(struct rtas_ext_event_log_v6) ||
+ log_format != RTAS_V6EXT_LOG_FORMAT_EVENT_LOG ||
+ company_id != RTAS_V6EXT_COMPANY_ID_IBM)
return NULL;
- log_end = log->buffer + log->extended_log_length;
+ log_end = log->buffer + ext_log_length;
p = ext_log->vendor_log;
while (p < log_end) {
sect = (struct pseries_errorlog *)p;
- if (sect->id == section_id)
+ if (pseries_errorlog_id(sect) == section_id)
return sect;
- p += sect->length;
+ p += pseries_errorlog_length(sect);
}
return NULL;
}
+/* We assume to be passed big endian arguments */
asmlinkage int ppc_rtas(struct rtas_args __user *uargs)
{
struct rtas_args args;
unsigned long flags;
char *buff_copy, *errbuf = NULL;
- int nargs;
+ int nargs, nret, token;
int rc;
if (!capable(CAP_SYS_ADMIN))
@@ -1027,10 +1031,13 @@ asmlinkage int ppc_rtas(struct rtas_args __user *uargs)
if (copy_from_user(&args, uargs, 3 * sizeof(u32)) != 0)
return -EFAULT;
- nargs = args.nargs;
+ nargs = be32_to_cpu(args.nargs);
+ nret = be32_to_cpu(args.nret);
+ token = be32_to_cpu(args.token);
+
if (nargs > ARRAY_SIZE(args.args)
- || args.nret > ARRAY_SIZE(args.args)
- || nargs + args.nret > ARRAY_SIZE(args.args))
+ || nret > ARRAY_SIZE(args.args)
+ || nargs + nret > ARRAY_SIZE(args.args))
return -EINVAL;
/* Copy in args. */
@@ -1038,14 +1045,14 @@ asmlinkage int ppc_rtas(struct rtas_args __user *uargs)
nargs * sizeof(rtas_arg_t)) != 0)
return -EFAULT;
- if (args.token == RTAS_UNKNOWN_SERVICE)
+ if (token == RTAS_UNKNOWN_SERVICE)
return -EINVAL;
args.rets = &args.args[nargs];
- memset(args.rets, 0, args.nret * sizeof(rtas_arg_t));
+ memset(args.rets, 0, nret * sizeof(rtas_arg_t));
/* Need to handle ibm,suspend_me call specially */
- if (args.token == ibm_suspend_me_token) {
+ if (token == ibm_suspend_me_token) {
rc = rtas_ibm_suspend_me(&args);
if (rc)
return rc;
@@ -1062,7 +1069,7 @@ asmlinkage int ppc_rtas(struct rtas_args __user *uargs)
/* A -1 return code indicates that the last command couldn't
be completed due to a hardware error. */
- if (args.rets[0] == -1)
+ if (be32_to_cpu(args.rets[0]) == -1)
errbuf = __fetch_rtas_last_error(buff_copy);
unlock_rtas(flags);
@@ -1077,7 +1084,7 @@ asmlinkage int ppc_rtas(struct rtas_args __user *uargs)
/* Copy out args. */
if (copy_to_user(uargs->args + nargs,
args.args + nargs,
- args.nret * sizeof(rtas_arg_t)) != 0)
+ nret * sizeof(rtas_arg_t)) != 0)
return -EFAULT;
return 0;
@@ -1097,19 +1104,19 @@ void __init rtas_initialize(void)
*/
rtas.dev = of_find_node_by_name(NULL, "rtas");
if (rtas.dev) {
- const u32 *basep, *entryp, *sizep;
+ const __be32 *basep, *entryp, *sizep;
basep = of_get_property(rtas.dev, "linux,rtas-base", NULL);
sizep = of_get_property(rtas.dev, "rtas-size", NULL);
if (basep != NULL && sizep != NULL) {
- rtas.base = *basep;
- rtas.size = *sizep;
+ rtas.base = __be32_to_cpu(*basep);
+ rtas.size = __be32_to_cpu(*sizep);
entryp = of_get_property(rtas.dev,
"linux,rtas-entry", NULL);
if (entryp == NULL) /* Ugh */
rtas.entry = rtas.base;
else
- rtas.entry = *entryp;
+ rtas.entry = __be32_to_cpu(*entryp);
} else
rtas.dev = NULL;
}
@@ -1135,7 +1142,7 @@ void __init rtas_initialize(void)
int __init early_init_dt_scan_rtas(unsigned long node,
const char *uname, int depth, void *data)
{
- u32 *basep, *entryp, *sizep;
+ const u32 *basep, *entryp, *sizep;
if (depth != 1 || strcmp(uname, "rtas") != 0)
return 0;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 08:15:13 +0000