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--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -2325,6 +2325,12 @@ config MIPS_VPE_LOADER
Includes a loader for loading an elf relocatable object
onto another VPE and running it.
+config IFX_VPE_EXT
+ bool "IFX APRP Extensions"
+ depends on MIPS_VPE_LOADER
+ help
+ IFX included extensions in APRP
+
config MIPS_VPE_LOADER_CMP
bool
default "y"
--- a/arch/mips/include/asm/vpe.h
+++ b/arch/mips/include/asm/vpe.h
@@ -127,4 +127,13 @@ void cleanup_tc(struct tc *tc);
int __init vpe_module_init(void);
void __exit vpe_module_exit(void);
+
+/* For the explanation of the APIs please refer the section "MT APRP Kernel
+ * Programming" in AR9 SW Architecture Specification
+ */
+int32_t vpe1_sw_start(void *sw_start_addr, uint32_t tcmask, uint32_t flags);
+int32_t vpe1_sw_stop(uint32_t flags);
+uint32_t vpe1_get_load_addr(uint32_t flags);
+uint32_t vpe1_get_max_mem(uint32_t flags);
+
#endif /* _ASM_VPE_H */
--- a/arch/mips/kernel/vpe-mt.c
+++ b/arch/mips/kernel/vpe-mt.c
@@ -29,6 +29,7 @@ int vpe_run(struct vpe *v)
struct vpe_notifications *notifier;
unsigned int vpeflags;
struct tc *t;
+ unsigned long physical_memsize = 0L;
/* check we are the Master VPE */
local_irq_save(flags);
@@ -417,6 +418,8 @@ int __init vpe_module_init(void)
}
v->ntcs = hw_tcs - aprp_cpu_index();
+ write_tc_c0_tcbind((read_tc_c0_tcbind() &
+ ~TCBIND_CURVPE) | 1);
/* add the tc to the list of this vpe's tc's. */
list_add(&t->tc, &v->tc);
@@ -519,3 +522,47 @@ void __exit vpe_module_exit(void)
release_vpe(v);
}
}
+
+#ifdef CONFIG_IFX_VPE_EXT
+int32_t vpe1_sw_start(void *sw_start_addr, uint32_t tcmask, uint32_t flags)
+{
+ enum vpe_state state;
+ struct vpe *v = get_vpe(tclimit);
+ struct vpe_notifications *not;
+
+ if (tcmask || flags) {
+ pr_warn("Currently tcmask and flags should be 0. Other values are not supported\n");
+ return -1;
+ }
+
+ state = xchg(&v->state, VPE_STATE_INUSE);
+ if (state != VPE_STATE_UNUSED) {
+ vpe_stop(v);
+
+ list_for_each_entry(not, &v->notify, list) {
+ not->stop(tclimit);
+ }
+ }
+
+ v->__start = (unsigned long)sw_start_addr;
+
+ if (!vpe_run(v)) {
+ pr_debug("VPE loader: VPE1 running successfully\n");
+ return 0;
+ }
+ return -1;
+}
+EXPORT_SYMBOL(vpe1_sw_start);
+
+int32_t vpe1_sw_stop(uint32_t flags)
+{
+ struct vpe *v = get_vpe(tclimit);
+
+ if (!vpe_free(v)) {
+ pr_debug("RP Stopped\n");
+ return 0;
+ } else
+ return -1;
+}
+EXPORT_SYMBOL(vpe1_sw_stop);
+#endif
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -49,6 +49,41 @@ struct vpe_control vpecontrol = {
.tc_list = LIST_HEAD_INIT(vpecontrol.tc_list)
};
+#ifdef CONFIG_IFX_VPE_EXT
+unsigned int vpe1_load_addr;
+
+static int __init load_address(char *str)
+{
+ get_option(&str, &vpe1_load_addr);
+ return 1;
+}
+__setup("vpe1_load_addr=", load_address);
+
+static unsigned int vpe1_mem;
+static int __init vpe1mem(char *str)
+{
+ vpe1_mem = memparse(str, &str);
+ return 1;
+}
+__setup("vpe1_mem=", vpe1mem);
+
+uint32_t vpe1_get_load_addr(uint32_t flags)
+{
+ return vpe1_load_addr;
+}
+EXPORT_SYMBOL(vpe1_get_load_addr);
+
+uint32_t vpe1_get_max_mem(uint32_t flags)
+{
+ if (!vpe1_mem)
+ return P_SIZE;
+ else
+ return vpe1_mem;
+}
+EXPORT_SYMBOL(vpe1_get_max_mem);
+
+#endif
+
/* get the vpe associated with this minor */
struct vpe *get_vpe(int minor)
{
--- a/arch/mips/lantiq/prom.c
+++ b/arch/mips/lantiq/prom.c
@@ -37,10 +37,14 @@ unsigned long physical_memsize = 0L;
*/
static struct ltq_soc_info soc_info;
+/* for Multithreading (APRP), vpe.c will use it */
+unsigned long cp0_memsize;
+
const char *get_system_type(void)
{
return soc_info.sys_type;
}
+EXPORT_SYMBOL(ltq_soc_type);
int ltq_soc_type(void)
{
--- a/arch/mips/include/asm/mipsmtregs.h
+++ b/arch/mips/include/asm/mipsmtregs.h
@@ -32,6 +32,9 @@
#define read_c0_vpeconf1() __read_32bit_c0_register($1, 3)
#define write_c0_vpeconf1(val) __write_32bit_c0_register($1, 3, val)
+#define read_c0_vpeopt() __read_32bit_c0_register($1, 7)
+#define write_c0_vpeopt(val) __write_32bit_c0_register($1, 7, val)
+
#define read_c0_tcstatus() __read_32bit_c0_register($2, 1)
#define write_c0_tcstatus(val) __write_32bit_c0_register($2, 1, val)
@@ -377,6 +380,8 @@ do { \
#define write_vpe_c0_vpeconf0(val) mttc0(1, 2, val)
#define read_vpe_c0_vpeconf1() mftc0(1, 3)
#define write_vpe_c0_vpeconf1(val) mttc0(1, 3, val)
+#define read_vpe_c0_vpeopt() mftc0(1, 7)
+#define write_vpe_c0_vpeopt(val) mttc0(1, 7, val)
#define read_vpe_c0_count() mftc0(9, 0)
#define write_vpe_c0_count(val) mttc0(9, 0, val)
#define read_vpe_c0_status() mftc0(12, 0)
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