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Move CMOS handling into separate files in accessors

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Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Acked-by: Stefan Reinauer <stefan.reinauer@coreboot.org>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6313 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Patrick Georgi
2011-01-28 07:54:11 +00:00
committed by Patrick Georgi
parent 49a74437aa
commit 1e916e0766
6 changed files with 168 additions and 151 deletions
Download Patch File Download Diff File Expand all files Collapse all files

127
util/nvramtool/cmos_lowlevel.c
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@@ -38,98 +38,9 @@
/* 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) {
@@ -353,42 +264,6 @@ void set_iopl(int level)
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
*