src/drivers/ipmi/ipmi_ops_premem.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <arch/io.h>
   4 #include <console/console.h>
   5 #include <device/pnp.h>
   6 #include <delay.h>
   7 #include <timer.h>
   8
   9 #include "ipmi_if.h"
  10 #include "chip.h"
  11
  12 enum cb_err ipmi_premem_init(const u16 port, const u16 device)
  13 {
  14         const struct drivers_ipmi_config *conf = NULL;
  15         const struct device *dev;
  16
  17         /* Find IPMI PNP device from devicetree in romstage */
  18         dev = dev_find_slot_pnp(port, device);
  19
  20         if (!dev) {
  21                 printk(BIOS_ERR, "IPMI: Cannot find PNP device port: %x, device %x\n",
  22                         port, device);
  23                 return CB_ERR;
  24         }
  25         if (!dev->enabled) {
  26                 printk(BIOS_ERR, "IPMI: device is not enabled\n");
  27                 return CB_ERR;
  28         }
  29         printk(BIOS_DEBUG, "IPMI: romstage PNP KCS 0x%x\n", dev->path.pnp.port);
  30         if (dev->chip_info)
  31                 conf = dev->chip_info;
  32
  33         if (conf && conf->wait_for_bmc && conf->bmc_boot_timeout) {
  34                 struct stopwatch sw;
  35                 stopwatch_init_msecs_expire(&sw, conf->bmc_boot_timeout * 1000);
  36                 printk(BIOS_DEBUG, "IPMI: Waiting for BMC...\n");
  37
  38                 while (!stopwatch_expired(&sw)) {
  39                         if (inb(dev->path.pnp.port) != 0xff)
  40                                 break;
  41                         mdelay(100);
  42                 }
  43                 if (stopwatch_expired(&sw)) {
  44                         printk(BIOS_INFO, "IPMI: Waiting for BMC timed out\n");
  45                         return CB_ERR;
  46                 }
  47         }
  48
  49         if (ipmi_process_self_test_result(dev))
  50                 return CB_ERR;
  51
  52         return CB_SUCCESS;
  53 }