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mec1322: Use EMI module for port 80

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EMI module is the only LPC module suitable for port 80 implementation,
and thus let's move it to 0x80. Consequently the EMI mapped memory is
moved to 0x82-0x87.

BUG=chrome-os-partner:24107
TEST=Write to port 80 and see the data printed to console
BRANCH=None

Change-Id: I7d749650d6d109af2941a1db6e6c4a32e7482f61
Signed-off-by: Vic (Chun-Ju) Yang <victoryang@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/182796
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
This commit is contained in:
Vic (Chun-Ju) Yang
2014-01-16 16:02:09 +08:00
committed by chrome-internal-fetch
parent ca9c2744ea
commit 83d082a1f2
2 changed files with 19 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
chip/mec1322/lpc.c
View File

@@ -12,6 +12,7 @@
#include "host_command.h"
#include "keyboard_protocol.h"
#include "lpc.h"
#include "port80.h"
#include "registers.h"
#include "task.h"
#include "timer.h"
@@ -186,16 +187,16 @@ static void setup_lpc(void)
/* TODO(crosbug.com/p/24107): Route KIRQ to SER_IRQ1 */
/* Set up EMI module for memory mapped region.
* TODO(crosbug.com/p/24107): Use LPC memory transaction for this
* when we have updated info of memory BAR
* register.
*/
MEC1322_LPC_EMI_BAR = 0x0800800f;
/* Set up EMI module for memory mapped region and port 80 */
MEC1322_LPC_EMI_BAR = 0x0080800f;
MEC1322_EMI_MBA0 = ptr;
MEC1322_EMI_MRL0 = 0x200;
MEC1322_EMI_MWL0 = 0x100;
MEC1322_INT_ENABLE(15) |= 1 << 2;
MEC1322_INT_BLK_EN |= 1 << 15;
task_enable_irq(MEC1322_IRQ_EMI);
/* We support LPC args and version 3 protocol */
*(lpc_get_memmap_range() + EC_MEMMAP_HOST_CMD_FLAGS) =
EC_HOST_CMD_FLAG_LPC_ARGS_SUPPORTED |
@@ -224,6 +225,12 @@ static void lpc_init(void)
*/
DECLARE_HOOK(HOOK_INIT, lpc_init, HOOK_PRIO_INIT_LPC);
static void emi_interrupt(void)
{
port_80_write(MEC1322_EMI_H2E_MBX);
}
DECLARE_IRQ(MEC1322_IRQ_EMI, emi_interrupt, 1);
static void acpi_0_interrupt(void)
{
uint8_t value, result, is_cmd;

12
util/comm-mec1322.c
View File

@@ -50,19 +50,19 @@ static int wait_for_ec(int status_addr, int timeout_usec)
static void write_memmap(uint8_t b, uint16_t addr)
{
addr -= 0x800;
outb(addr & 0xfc, 0x802);
outb((addr >> 8) & 0x7f, 0x803);
outb(addr & 0xfc, 0x82);
outb((addr >> 8) & 0x7f, 0x83);
usleep(500);
outb(b, 0x804 + (addr & 0x3));
outb(b, 0x84 + (addr & 0x3));
}
static uint8_t read_memmap(uint16_t addr)
{
addr -= 0x800;
outb(addr & 0xfc, 0x802);
outb((addr >> 8) & 0x7f, 0x803);
outb(addr & 0xfc, 0x82);
outb((addr >> 8) & 0x7f, 0x83);
usleep(500);
return inb(0x804 + (addr & 0x3));
return inb(0x84 + (addr & 0x3));
}
static void send_byte(uint8_t b, uint16_t addr)