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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH v1 54/57] xen/rirscv: add minimal amount of stubs to build full Xen
Signed-off-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
---
xen/arch/riscv/Kconfig | 1 +
xen/arch/riscv/Makefile | 1 +
xen/arch/riscv/early_printk.c | 168 -------------
xen/arch/riscv/mm.c | 52 +++-
xen/arch/riscv/setup.c | 9 +-
xen/arch/riscv/stubs.c | 437 ++++++++++++++++++++++++++++++++++
xen/arch/riscv/traps.c | 25 ++
7 files changed, 523 insertions(+), 170 deletions(-)
create mode 100644 xen/arch/riscv/stubs.c
diff --git a/xen/arch/riscv/Kconfig b/xen/arch/riscv/Kconfig
index f382b36f6c..64caaa2750 100644
--- a/xen/arch/riscv/Kconfig
+++ b/xen/arch/riscv/Kconfig
@@ -4,6 +4,7 @@ config RISCV
config RISCV_64
def_bool y
select 64BIT
+ select HAS_PDX
config ARCH_DEFCONFIG
string
diff --git a/xen/arch/riscv/Makefile b/xen/arch/riscv/Makefile
index b08048948f..50c09469a0 100644
--- a/xen/arch/riscv/Makefile
+++ b/xen/arch/riscv/Makefile
@@ -5,6 +5,7 @@ obj-y += mm.o
obj-$(CONFIG_RISCV_64) += riscv64/
obj-y += sbi.o
obj-y += setup.o
+obj-y += stubs.o
obj-y += traps.o
$(TARGET): $(TARGET)-syms
diff --git a/xen/arch/riscv/early_printk.c b/xen/arch/riscv/early_printk.c
index 60742a042d..610c814f54 100644
--- a/xen/arch/riscv/early_printk.c
+++ b/xen/arch/riscv/early_printk.c
@@ -40,171 +40,3 @@ void early_printk(const char *str)
str++;
}
}
-
-/*
- * The following #if 1 ... #endif should be removed after printk
- * and related stuff are ready.
- */
-#if 1
-
-#include <xen/stdarg.h>
-#include <xen/string.h>
-
-/**
- * strlen - Find the length of a string
- * @s: The string to be sized
- */
-size_t (strlen)(const char * s)
-{
- const char *sc;
-
- for (sc = s; *sc != '\0'; ++sc)
- /* nothing */;
- return sc - s;
-}
-
-/**
- * memcpy - Copy one area of memory to another
- * @dest: Where to copy to
- * @src: Where to copy from
- * @count: The size of the area.
- *
- * You should not use this function to access IO space, use memcpy_toio()
- * or memcpy_fromio() instead.
- */
-void *(memcpy)(void *dest, const void *src, size_t count)
-{
- char *tmp = (char *) dest, *s = (char *) src;
-
- while (count--)
- *tmp++ = *s++;
-
- return dest;
-}
-
-int vsnprintf(char* str, size_t size, const char* format, va_list args)
-{
- size_t i = 0; /* Current position in the output string */
- size_t written = 0; /* Total number of characters written */
- char* dest = str;
-
- while ( format[i] != '\0' && written < size - 1 )
- {
- if ( format[i] == '%' )
- {
- i++;
-
- if ( format[i] == '\0' )
- break;
-
- if ( format[i] == '%' )
- {
- if ( written < size - 1 )
- {
- dest[written] = '%';
- written++;
- }
- i++;
- continue;
- }
-
- /*
- * Handle format specifiers.
- * For simplicity, only %s and %d are implemented here.
- */
-
- if ( format[i] == 's' )
- {
- char* arg = va_arg(args, char*);
- size_t arglen = strlen(arg);
-
- size_t remaining = size - written - 1;
-
- if ( arglen > remaining )
- arglen = remaining;
-
- memcpy(dest + written, arg, arglen);
-
- written += arglen;
- i++;
- }
- else if ( format[i] == 'd' )
- {
- int arg = va_arg(args, int);
-
- /* Convert the integer to string representation */
- char numstr[32]; /* Assumes a maximum of 32 digits */
- int numlen = 0;
- int num = arg;
- size_t remaining;
-
- if ( arg < 0 )
- {
- if ( written < size - 1 )
- {
- dest[written] = '-';
- written++;
- }
-
- num = -arg;
- }
-
- do
- {
- numstr[numlen] = '0' + num % 10;
- num = num / 10;
- numlen++;
- } while ( num > 0 );
-
- /* Reverse the string */
- for (int j = 0; j < numlen / 2; j++)
- {
- char tmp = numstr[j];
- numstr[j] = numstr[numlen - 1 - j];
- numstr[numlen - 1 - j] = tmp;
- }
-
- remaining = size - written - 1;
-
- if ( numlen > remaining )
- numlen = remaining;
-
- memcpy(dest + written, numstr, numlen);
-
- written += numlen;
- i++;
- }
- }
- else
- {
- if ( written < size - 1 )
- {
- dest[written] = format[i];
- written++;
- }
- i++;
- }
- }
-
- if ( size > 0 )
- dest[written] = '\0';
-
- return written;
-}
-
-void printk(const char *format, ...)
-{
- static char buf[1024];
-
- va_list args;
- va_start(args, format);
-
- (void)vsnprintf(buf, sizeof(buf), format, args);
-
- early_printk(buf);
-
- va_end(args);
-}
-
-#endif
-
diff --git a/xen/arch/riscv/mm.c b/xen/arch/riscv/mm.c
index 99ed5e9623..0f40641db7 100644
--- a/xen/arch/riscv/mm.c
+++ b/xen/arch/riscv/mm.c
@@ -3,15 +3,19 @@
#include <xen/compiler.h>
#include <xen/init.h>
#include <xen/kernel.h>
+#include <xen/lib.h>
+#include <xen/mm.h>
#include <xen/pfn.h>
#include <asm/early_printk.h>
#include <asm/csr.h>
#include <asm/current.h>
-#include <asm/mm.h>
#include <asm/page.h>
#include <asm/processor.h>
+unsigned long frametable_base_pdx __read_mostly;
+unsigned long frametable_virt_end __read_mostly;
+
struct mmu_desc {
unsigned int num_levels;
unsigned int pgtbl_count;
@@ -273,3 +277,49 @@ void __init noreturn noinline enable_mmu()
switch_stack_and_jump((unsigned long)cpu0_boot_stack + STACK_SIZE,
cont_after_mmu_is_enabled);
}
+
+void put_page(struct page_info *page)
+{
+ assert_failed(__func__);
+}
+
+unsigned long get_upper_mfn_bound(void)
+{
+ /* No memory hotplug yet, so current memory limit is the final one. */
+ return max_page - 1;
+}
+
+void arch_dump_shared_mem_info(void)
+{
+ WARN();
+}
+
+int populate_pt_range(unsigned long virt, unsigned long nr_mfns)
+{
+ assert_failed(__func__);
+ return -1;
+}
+
+int xenmem_add_to_physmap_one(struct domain *d, unsigned int space,
+ union add_to_physmap_extra extra,
+ unsigned long idx, gfn_t gfn)
+{
+ WARN();
+
+ return 0;
+}
+
+int destroy_xen_mappings(unsigned long s, unsigned long e)
+{
+ assert_failed(__func__);
+ return -1;
+}
+
+int map_pages_to_xen(unsigned long virt,
+ mfn_t mfn,
+ unsigned long nr_mfns,
+ unsigned int flags)
+{
+ assert_failed(__func__);
+ return -1;
+}
diff --git a/xen/arch/riscv/setup.c b/xen/arch/riscv/setup.c
index dde8fb898b..b44ce41d22 100644
--- a/xen/arch/riscv/setup.c
+++ b/xen/arch/riscv/setup.c
@@ -2,9 +2,16 @@
#include <xen/compile.h>
#include <xen/init.h>
+#include <xen/mm.h>
+
+#include <public/version.h>
#include <asm/early_printk.h>
-#include <asm/mm.h>
+
+void arch_get_xen_caps(xen_capabilities_info_t *info)
+{
+ assert_failed("need to be implemented");
+}
/* Xen stack for bringing up the first CPU. */
unsigned char __initdata cpu0_boot_stack[STACK_SIZE]
diff --git a/xen/arch/riscv/stubs.c b/xen/arch/riscv/stubs.c
new file mode 100644
index 0000000000..3232039bc2
--- /dev/null
+++ b/xen/arch/riscv/stubs.c
@@ -0,0 +1,437 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#include <xen/cpumask.h>
+#include <xen/domain.h>
+#include <xen/irq.h>
+#include <xen/nodemask.h>
+#include <xen/time.h>
+#include <public/domctl.h>
+#include <public/vm_event.h>
+
+#include <asm/current.h>
+
+/* smpboot.c */
+
+cpumask_t cpu_online_map;
+cpumask_t cpu_present_map;
+cpumask_t cpu_possible_map;
+
+/* ID of the PCPU we're running on */
+DEFINE_PER_CPU(unsigned int, cpu_id);
+/* XXX these seem awfully x86ish... */
+/* representing HT siblings of each logical CPU */
+DEFINE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_sibling_mask);
+/* representing HT and core siblings of each logical CPU */
+DEFINE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_core_mask);
+
+nodemask_t __read_mostly node_online_map = { { [0] = 1UL } };
+
+/* time.c */
+
+unsigned long __read_mostly cpu_khz; /* CPU clock frequency in kHz. */
+
+s_time_t get_s_time(void)
+{
+ BUG();
+}
+
+int reprogram_timer(s_time_t timeout)
+{
+ BUG();
+}
+
+void send_timer_event(struct vcpu *v)
+{
+ BUG();
+}
+
+void domain_set_time_offset(struct domain *d, int64_t time_offset_seconds)
+{
+ BUG();
+}
+
+/* shutdown.c */
+
+void machine_restart(unsigned int delay_millisecs)
+{
+ BUG();
+}
+
+void machine_halt(void)
+{
+ BUG();
+}
+
+/* vm_event.c */
+
+void vm_event_fill_regs(vm_event_request_t *req)
+{
+ BUG();
+}
+
+void vm_event_set_registers(struct vcpu *v, vm_event_response_t *rsp)
+{
+ BUG();
+}
+
+void vm_event_monitor_next_interrupt(struct vcpu *v)
+{
+ /* Not supported on RISCV. */
+}
+
+void vm_event_reset_vmtrace(struct vcpu *v)
+{
+ /* Not supported on RISCV. */
+}
+
+/* domctl.c */
+
+long arch_do_domctl(struct xen_domctl *domctl, struct domain *d,
+ XEN_GUEST_HANDLE_PARAM(xen_domctl_t) u_domctl)
+{
+ BUG();
+}
+
+void arch_get_domain_info(const struct domain *d,
+ struct xen_domctl_getdomaininfo *info)
+{
+ BUG();
+}
+
+void arch_get_info_guest(struct vcpu *v, vcpu_guest_context_u c)
+{
+ BUG();
+}
+
+/* monitor.c */
+
+int arch_monitor_domctl_event(struct domain *d,
+ struct xen_domctl_monitor_op *mop)
+{
+ BUG();
+}
+
+/* smp.c */
+
+void arch_flush_tlb_mask(const cpumask_t *mask)
+{
+ BUG();
+}
+
+void smp_send_event_check_mask(const cpumask_t *mask)
+{
+ BUG();
+}
+
+void smp_send_call_function_mask(const cpumask_t *mask)
+{
+ BUG();
+}
+
+/* irq.c */
+
+struct pirq *alloc_pirq_struct(struct domain *d)
+{
+ BUG();
+}
+
+int pirq_guest_bind(struct vcpu *v, struct pirq *pirq, int will_share)
+{
+ BUG();
+}
+
+void pirq_guest_unbind(struct domain *d, struct pirq *pirq)
+{
+ BUG();
+}
+
+void pirq_set_affinity(struct domain *d, int pirq, const cpumask_t *mask)
+{
+ BUG();
+}
+
+static void ack_none(struct irq_desc *irq)
+{
+ BUG();
+}
+
+static void end_none(struct irq_desc *irq)
+{
+ BUG();
+}
+
+hw_irq_controller no_irq_type = {
+ .typename = "none",
+ .startup = irq_startup_none,
+ .shutdown = irq_shutdown_none,
+ .enable = irq_enable_none,
+ .disable = irq_disable_none,
+ .ack = ack_none,
+ .end = end_none
+};
+
+int arch_init_one_irq_desc(struct irq_desc *desc)
+{
+ BUG();
+}
+
+void smp_send_state_dump(unsigned int cpu)
+{
+ BUG();
+}
+
+/* domain.c */
+
+DEFINE_PER_CPU(struct vcpu *, curr_vcpu);
+unsigned long __per_cpu_offset[NR_CPUS];
+
+void context_switch(struct vcpu *prev, struct vcpu *next)
+{
+ BUG();
+}
+
+void continue_running(struct vcpu *same)
+{
+ BUG();
+}
+
+void sync_local_execstate(void)
+{
+ BUG();
+}
+
+void sync_vcpu_execstate(struct vcpu *v)
+{
+ BUG();
+}
+
+void startup_cpu_idle_loop(void)
+{
+ BUG();
+}
+
+void free_domain_struct(struct domain *d)
+{
+ BUG();
+}
+
+void dump_pageframe_info(struct domain *d)
+{
+ BUG();
+}
+
+void free_vcpu_struct(struct vcpu *v)
+{
+ BUG();
+}
+
+int arch_vcpu_create(struct vcpu *v)
+{
+ BUG();
+}
+
+void arch_vcpu_destroy(struct vcpu *v)
+{
+ BUG();
+}
+
+void vcpu_switch_to_aarch64_mode(struct vcpu *v)
+{
+ BUG();
+}
+
+int arch_sanitise_domain_config(struct xen_domctl_createdomain *config)
+{
+ BUG();
+}
+
+int arch_domain_create(struct domain *d,
+ struct xen_domctl_createdomain *config,
+ unsigned int flags)
+{
+ BUG();
+}
+
+int arch_domain_teardown(struct domain *d)
+{
+ BUG();
+}
+
+void arch_domain_destroy(struct domain *d)
+{
+ BUG();
+}
+
+void arch_domain_shutdown(struct domain *d)
+{
+ BUG();
+}
+
+void arch_domain_pause(struct domain *d)
+{
+ BUG();
+}
+
+void arch_domain_unpause(struct domain *d)
+{
+ BUG();
+}
+
+int arch_domain_soft_reset(struct domain *d)
+{
+ BUG();
+}
+
+void arch_domain_creation_finished(struct domain *d)
+{
+ BUG();
+}
+
+int arch_set_info_guest(struct vcpu *v, vcpu_guest_context_u c)
+{
+ BUG();
+}
+
+int arch_initialise_vcpu(struct vcpu *v, XEN_GUEST_HANDLE_PARAM(void) arg)
+{
+ BUG();
+}
+
+int arch_vcpu_reset(struct vcpu *v)
+{
+ BUG();
+}
+
+int domain_relinquish_resources(struct domain *d)
+{
+ BUG();
+}
+
+void arch_dump_domain_info(struct domain *d)
+{
+ BUG();
+}
+
+void arch_dump_vcpu_info(struct vcpu *v)
+{
+ BUG();
+}
+
+void vcpu_mark_events_pending(struct vcpu *v)
+{
+ BUG();
+}
+
+void vcpu_update_evtchn_irq(struct vcpu *v)
+{
+ BUG();
+}
+
+void vcpu_block_unless_event_pending(struct vcpu *v)
+{
+ BUG();
+}
+
+void vcpu_kick(struct vcpu *v)
+{
+ BUG();
+}
+
+struct domain *alloc_domain_struct(void)
+{
+ BUG();
+}
+
+struct vcpu *alloc_vcpu_struct(const struct domain *d)
+{
+ BUG();
+}
+
+unsigned long
+hypercall_create_continuation(unsigned int op, const char *format, ...)
+{
+ BUG();
+}
+
+int __init parse_arch_dom0_param(const char *s, const char *e)
+{
+ BUG();
+}
+
+/* guestcopy.c */
+
+unsigned long raw_copy_to_guest(void *to, const void *from, unsigned int len)
+{
+ BUG();
+}
+
+unsigned long raw_copy_from_guest(void *to, const void __user *from,
+ unsigned int len)
+{
+ BUG();
+}
+
+/* sysctl.c */
+
+long arch_do_sysctl(struct xen_sysctl *sysctl,
+ XEN_GUEST_HANDLE_PARAM(xen_sysctl_t) u_sysctl)
+{
+ BUG();
+}
+
+void arch_do_physinfo(struct xen_sysctl_physinfo *pi)
+{
+ BUG();
+}
+
+/* p2m.c */
+
+int arch_set_paging_mempool_size(struct domain *d, uint64_t size)
+{
+ BUG();
+}
+
+int unmap_mmio_regions(struct domain *d,
+ gfn_t start_gfn,
+ unsigned long nr,
+ mfn_t mfn)
+{
+ BUG();
+}
+
+int map_mmio_regions(struct domain *d,
+ gfn_t start_gfn,
+ unsigned long nr,
+ mfn_t mfn)
+{
+ BUG();
+}
+
+int set_foreign_p2m_entry(struct domain *d, const struct domain *fd,
+ unsigned long gfn, mfn_t mfn)
+{
+ BUG();
+}
+
+/* Return the size of the pool, in bytes. */
+int arch_get_paging_mempool_size(struct domain *d, uint64_t *size)
+{
+ BUG();
+}
+
+/* need for build until common code starts be buildable */
+unsigned long __read_mostly max_page;
+
+void printk(const char *fmt, ...)
+{
+ BUG();
+}
+
+void cf_check irq_actor_none(struct irq_desc *desc)
+{
+ BUG();
+}
+
+unsigned int cf_check irq_startup_none(struct irq_desc *desc)
+{
+ return 0;
+}
\ No newline at end of file
diff --git a/xen/arch/riscv/traps.c b/xen/arch/riscv/traps.c
index ccd3593f5a..ca56df75d8 100644
--- a/xen/arch/riscv/traps.c
+++ b/xen/arch/riscv/traps.c
@@ -4,6 +4,10 @@
*
* RISC-V Trap handlers
*/
+
+#include <xen/lib.h>
+#include <xen/sched.h>
+
#include <asm/processor.h>
#include <asm/traps.h>
@@ -11,3 +15,24 @@ void do_trap(struct cpu_user_regs *cpu_regs)
{
die();
}
+
+void vcpu_show_execution_state(struct vcpu *v)
+{
+ assert_failed("need to be implented");
+}
+
+void show_execution_state(const struct cpu_user_regs *regs)
+{
+ printk("implement show_execution_state(regs)\n");
+}
+
+void arch_hypercall_tasklet_result(struct vcpu *v, long res)
+{
+ assert_failed("need to be implented");
+}
+
+enum mc_disposition arch_do_multicall_call(struct mc_state *state)
+{
+ assert_failed("need to be implented");
+ return mc_continue;
+}
--
2.41.0
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