OBJS = cmos_lowlevel.o cmos_ops.o common.o compute_ip_checksum.o \
hexdump.o input_file.o layout.o accessors/layout-text.o lbtable.o \
- reg_expr.o cbfs.o
+ reg_expr.o cbfs.o accessors/cmos-hw-unix.o accessors/cmos-mem.o
OBJS += $(CLI_OBJS)
--- /dev/null
+#include <assert.h>
+#include "cmos_lowlevel.h"
+
+#if defined(__FreeBSD__)
+#include <sys/types.h>
+#include <machine/cpufunc.h>
+#define OUTB(x, y) do { u_int tmp = (y); outb(tmp, (x)); } while (0)
+#define OUTW(x, y) do { u_int tmp = (y); outw(tmp, (x)); } while (0)
+#define OUTL(x, y) do { u_int tmp = (y); outl(tmp, (x)); } while (0)
+#define INB(x) __extension__ ({ u_int tmp = (x); inb(tmp); })
+#define INW(x) __extension__ ({ u_int tmp = (x); inw(tmp); })
+#define INL(x) __extension__ ({ u_int tmp = (x); inl(tmp); })
+#else
+#if defined(__GLIBC__)
+#include <sys/io.h>
+#endif
+#if (defined(__MACH__) && defined(__APPLE__))
+#include <DirectIO/darwinio.h>
+#endif
+#define OUTB outb
+#define OUTW outw
+#define OUTL outl
+#define INB inb
+#define INW inw
+#define INL inl
+#endif
+
+static void cmos_hal_init(void* data);
+static unsigned char cmos_hal_read(unsigned addr);
+static void cmos_hal_write(unsigned addr, unsigned char value);
+static void cmos_set_iopl(int level);
+
+/* no need to initialize anything */
+static void cmos_hal_init(__attribute__((unused)) void *data)
+{
+}
+
+static unsigned char cmos_hal_read(unsigned index)
+{
+ unsigned short port_0, port_1;
+
+ assert(!verify_cmos_byte_index(index));
+
+ if (index < 128) {
+ port_0 = 0x70;
+ port_1 = 0x71;
+ } else {
+ port_0 = 0x72;
+ port_1 = 0x73;
+ }
+
+ OUTB(index, port_0);
+ return INB(port_1);
+}
+
+static void cmos_hal_write(unsigned index, unsigned char value)
+{
+ unsigned short port_0, port_1;
+
+ assert(!verify_cmos_byte_index(index));
+
+ if (index < 128) {
+ port_0 = 0x70;
+ port_1 = 0x71;
+ } else {
+ port_0 = 0x72;
+ port_1 = 0x73;
+ }
+
+ OUTB(index, port_0);
+ OUTB(value, port_1);
+}
+
+
+/****************************************************************************
+ * cmos_set_iopl
+ *
+ * Set the I/O privilege level of the executing process. Root privileges are
+ * required for performing this action. A sufficient I/O privilege level
+ * allows the process to access x86 I/O address space and to disable/reenable
+ * interrupts while executing in user space. Messing with the I/O privilege
+ * level is therefore somewhat dangerous.
+ ****************************************************************************/
+static void cmos_set_iopl(int level)
+{
+#if defined(__FreeBSD__)
+ static int io_fd = -1;
+#endif
+
+ assert((level >= 0) && (level <= 3));
+
+#if defined(__FreeBSD__)
+ if (level == 0) {
+ if (io_fd != -1) {
+ close(io_fd);
+ io_fd = -1;
+ }
+ } else {
+ if (io_fd == -1) {
+ io_fd = open("/dev/io", O_RDWR);
+ if (io_fd < 0) {
+ perror("/dev/io");
+ exit(1);
+ }
+ }
+ }
+#else
+ if (iopl(level)) {
+ fprintf(stderr, "%s: iopl() system call failed. "
+ "You must be root to do this.\n", prog_name);
+ exit(1);
+ }
+#endif
+}
+
+cmos_access_t cmos_hal = {
+ .init = cmos_hal_init,
+ .read = cmos_hal_read,
+ .write = cmos_hal_write,
+ .set_iopl = cmos_set_iopl,
+};
+
--- /dev/null
+#include <assert.h>
+#include "cmos_lowlevel.h"
+
+static void mem_hal_init(void* data);
+static unsigned char mem_hal_read(unsigned addr);
+static void mem_hal_write(unsigned addr, unsigned char value);
+static void mem_set_iopl(int level);
+
+static unsigned char* mem_hal_data = (unsigned char*)-1;
+static void mem_hal_init(void *data)
+{
+ mem_hal_data = data;
+}
+
+static unsigned char mem_hal_read(unsigned index)
+{
+ assert(mem_hal_data != (unsigned char*)-1);
+ return mem_hal_data[index];
+}
+
+static void mem_hal_write(unsigned index, unsigned char value)
+{
+ assert(mem_hal_data != (unsigned char*)-1);
+ mem_hal_data[index] = value;
+}
+
+static void mem_set_iopl(__attribute__ ((unused)) int level)
+{
+}
+
+cmos_access_t memory_hal = {
+ .init = mem_hal_init,
+ .read = mem_hal_read,
+ .write = mem_hal_write,
+ .set_iopl = mem_set_iopl,
+};
+
/* Hardware Abstraction Layer: lowlevel byte-wise write access */
-typedef struct {
- void (*init)(void* data);
- unsigned char (*read)(unsigned addr);
- void (*write)(unsigned addr, unsigned char value);
- void (*set_iopl)(int level);
-} cmos_access_t;
-
-static void cmos_hal_init(void* data);
-static unsigned char cmos_hal_read(unsigned addr);
-static void cmos_hal_write(unsigned addr, unsigned char value);
-static void cmos_set_iopl(int level);
-
-static cmos_access_t cmos_hal = {
- .init = cmos_hal_init,
- .read = cmos_hal_read,
- .write = cmos_hal_write,
- .set_iopl = cmos_set_iopl,
-};
-
-static void mem_hal_init(void* data);
-static unsigned char mem_hal_read(unsigned addr);
-static void mem_hal_write(unsigned addr, unsigned char value);
-static void mem_set_iopl(int level);
-
-static cmos_access_t memory_hal = {
- .init = mem_hal_init,
- .read = mem_hal_read,
- .write = mem_hal_write,
- .set_iopl = mem_set_iopl,
-};
-
+extern cmos_access_t cmos_hal, memory_hal;
static cmos_access_t *current_access = &cmos_hal;
-/* no need to initialize anything */
-static void cmos_hal_init(__attribute__((unused)) void *data)
-{
-}
-
-static unsigned char cmos_hal_read(unsigned index)
-{
- unsigned short port_0, port_1;
-
- assert(!verify_cmos_byte_index(index));
-
- if (index < 128) {
- port_0 = 0x70;
- port_1 = 0x71;
- } else {
- port_0 = 0x72;
- port_1 = 0x73;
- }
-
- OUTB(index, port_0);
- return INB(port_1);
-}
-
-static void cmos_hal_write(unsigned index, unsigned char value)
-{
- unsigned short port_0, port_1;
-
- assert(!verify_cmos_byte_index(index));
-
- if (index < 128) {
- port_0 = 0x70;
- port_1 = 0x71;
- } else {
- port_0 = 0x72;
- port_1 = 0x73;
- }
-
- OUTB(index, port_0);
- OUTB(value, port_1);
-}
-
-static unsigned char* mem_hal_data = (unsigned char*)-1;
-static void mem_hal_init(void *data)
-{
- mem_hal_data = data;
-}
-
-static unsigned char mem_hal_read(unsigned index)
-{
- assert(mem_hal_data != (unsigned char*)-1);
- return mem_hal_data[index];
-}
-
-static void mem_hal_write(unsigned index, unsigned char value)
-{
- assert(mem_hal_data != (unsigned char*)-1);
- mem_hal_data[index] = value;
-}
-
void select_hal(hal_t hal, void *data)
{
switch(hal) {
current_access->set_iopl(level);
}
-static void cmos_set_iopl(int level)
-{
-#if defined(__FreeBSD__)
- static int io_fd = -1;
-#endif
-
- assert((level >= 0) && (level <= 3));
-
-#if defined(__FreeBSD__)
- if (level == 0) {
- if (io_fd != -1) {
- close(io_fd);
- io_fd = -1;
- }
- } else {
- if (io_fd == -1) {
- io_fd = open("/dev/io", O_RDWR);
- if (io_fd < 0) {
- perror("/dev/io");
- exit(1);
- }
- }
- }
-#else
- if (iopl(level)) {
- fprintf(stderr, "%s: iopl() system call failed. "
- "You must be root to do this.\n", prog_name);
- exit(1);
- }
-#endif
-}
-
-static void mem_set_iopl(__attribute__ ((unused)) int level)
-{
-}
-
/****************************************************************************
* verify_cmos_op
*
#include "common.h"
#include "layout.h"
+typedef struct {
+ void (*init)(void* data);
+ unsigned char (*read)(unsigned addr);
+ void (*write)(unsigned addr, unsigned char value);
+ void (*set_iopl)(int level);
+} cmos_access_t;
+
typedef enum { HAL_CMOS, HAL_MEMORY } hal_t;
void select_hal(hal_t hal, void *data);
#include <string.h>
#include <ctype.h>
-#if defined(__FreeBSD__)
-#include <sys/types.h>
-#include <machine/cpufunc.h>
-#define OUTB(x, y) do { u_int tmp = (y); outb(tmp, (x)); } while (0)
-#define OUTW(x, y) do { u_int tmp = (y); outw(tmp, (x)); } while (0)
-#define OUTL(x, y) do { u_int tmp = (y); outl(tmp, (x)); } while (0)
-#define INB(x) __extension__ ({ u_int tmp = (x); inb(tmp); })
-#define INW(x) __extension__ ({ u_int tmp = (x); inw(tmp); })
-#define INL(x) __extension__ ({ u_int tmp = (x); inl(tmp); })
-#else
-#if defined(__GLIBC__)
-#include <sys/io.h>
-#endif
-#if (defined(__MACH__) && defined(__APPLE__))
-#include <DirectIO/darwinio.h>
-#endif
-#define OUTB outb
-#define OUTW outw
-#define OUTL outl
-#define INB inb
-#define INW inw
-#define INL inl
-#endif
-
#define FALSE 0
#define TRUE 1
projects / coreboot.git / commitdiff