arch/arm/mach-imx/imx8/misc.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 #include <common.h>
   3 #include <log.h>
   4 #include <firmware/imx/sci/sci.h>
   5 #include <asm/mach-imx/sys_proto.h>
   6 #include <imx_sip.h>
   7 #include <linux/arm-smccc.h>
   8
   9 int sc_pm_setup_uart(sc_rsrc_t uart_rsrc, sc_pm_clock_rate_t clk_rate)
  10 {
  11         sc_pm_clock_rate_t rate = clk_rate;
  12         int ret;
  13
  14         /* Power up UARTn */
  15         ret = sc_pm_set_resource_power_mode(-1, uart_rsrc, SC_PM_PW_MODE_ON);
  16         if (ret)
  17                 return ret;
  18
  19         /* Set UARTn clock root to 'rate' MHz */
  20         ret = sc_pm_set_clock_rate(-1, uart_rsrc, SC_PM_CLK_PER, &rate);
  21         if (ret)
  22                 return ret;
  23
  24         /* Enable UARTn clock root */
  25         ret = sc_pm_clock_enable(-1, uart_rsrc, SC_PM_CLK_PER, true, false);
  26         if (ret)
  27                 return ret;
  28
  29         return 0;
  30 }
  31
  32 void build_info(void)
  33 {
  34         struct arm_smccc_res res;
  35         u32 seco_build = 0, seco_commit = 0;
  36         u32 sc_build = 0, sc_commit = 0;
  37         ulong atf_commit = 0;
  38
  39         /* Get SCFW build and commit id */
  40         sc_misc_build_info(-1, &sc_build, &sc_commit);
  41         if (!sc_build) {
  42                 printf("SCFW does not support build info\n");
  43                 sc_commit = 0; /* Display 0 if build info not supported */
  44         }
  45
  46         /* Get SECO FW build and commit id */
  47         sc_seco_build_info(-1, &seco_build, &seco_commit);
  48         if (!seco_build) {
  49                 debug("SECO FW does not support build info\n");
  50                 /* Display 0 when the build info is not supported */
  51                 seco_commit = 0;
  52         }
  53
  54         /* Get ARM Trusted Firmware commit id */
  55         arm_smccc_smc(IMX_SIP_BUILDINFO, IMX_SIP_BUILDINFO_GET_COMMITHASH,
  56                       0, 0, 0, 0, 0, 0, &res);
  57         atf_commit = res.a0;
  58         if (atf_commit == 0xffffffff) {
  59                 debug("ATF does not support build info\n");
  60                 atf_commit = 0x30; /* Display 0 */
  61         }
  62
  63         printf("Build: SCFW %08x, SECO-FW %08x, ATF %s\n",
  64                sc_commit, seco_commit, (char *)&atf_commit);
  65 }