Add send_hardware_nmi to Grapefruit (#1987)

This is another small improvement for #1983

Author: mkeeter

app/grapefruit/app.toml

@@ -178,6 +178,7 @@ max-sizes = {flash = 131072, ram = 16384 }
 stacksize = 2600
 start = true
 task-slots = ["sys", {spi = "spi2_driver"}, "auxflash", "jefe", "packrat"]
+uses = ["fmc_nor_psram_bank_1"]
 
 [tasks.thermal]
 name = "task-thermal"

drv/grapefruit-seq-server/src/main.rs

@@ -350,6 +350,17 @@ impl<S: SpiServer + Clone> idl::InOrderSequencerImpl for ServerImpl<S> {
         &mut self,
         _: &RecvMessage,
     ) -> Result<(), RequestError<core::convert::Infallible>> {
+        let ptr = reg::sgpio::OUT1;
+        // SAFETY: the FPGA must be loaded, and these registers are in our FMC
+        // region, so we can access them.
+        unsafe {
+            let orig = ptr.read_volatile();
+            ptr.write_volatile(
+                (orig & !reg::sgpio::out1::MGMT_ASSERT_NMI_BTN_L) & 0xFFFF,
+            );
+            hl::sleep_for(1000);
+            ptr.write_volatile(orig);
+        }
         Ok(())
     }
 
@@ -371,6 +382,87 @@ impl<S: SpiServer> NotificationHandler for ServerImpl<S> {
     }
 }
 
+/// Register map for SGPIO registers
+#[allow(unused)]
+mod reg {
+    pub const BASE: *mut u32 = 0x60000000 as *mut _;
+
+    pub const SGPIO: *mut u32 = BASE.wrapping_add(0xc0);
+    pub mod sgpio {
+        use super::*;
+        pub const OUT0: *mut u32 = SGPIO.wrapping_add(0x0);
+        pub const IN0: *mut u32 = SGPIO.wrapping_add(0x1);
+        pub const OUT1: *mut u32 = SGPIO.wrapping_add(0x2);
+        pub const IN1: *mut u32 = SGPIO.wrapping_add(0x3);
+        pub mod out0 {
+            pub const HAWAII_HEARTBEAT: u32 = 1 << 14;
+            pub const MB_SCM_HPM_STBY_RDY: u32 = 1 << 14;
+            pub const HPM_BMC_GPIOY3: u32 = 1 << 11;
+            pub const MGMT_SMBUS_DATA: u32 = 1 << 10;
+            pub const MGMT_SMBUS_CLK: u32 = 1 << 9;
+            pub const GPIO_OUTPUT_9: u32 = 1 << 8;
+            pub const GPIO_OUTPUT_8: u32 = 1 << 7;
+            pub const GPIO_OUTPUT_7: u32 = 1 << 6;
+            pub const GPIO_OUTPUT_6: u32 = 1 << 5;
+            pub const BMC_READY: u32 = 1 << 4;
+            pub const HPM_BMC_GPIOL5: u32 = 1 << 3;
+            pub const HPM_BMC_GPIOL4: u32 = 1 << 2;
+            pub const HPM_BMC_GPIOH3: u32 = 1 << 1;
+            pub const MGMT_ASSERT_LOCAL_LOCK: u32 = 1 << 0;
+        }
+        pub mod in0 {
+            pub const BMC_SCM_FPGA_UART_RX: u32 = 1 << 15;
+            pub const MGMT_SYS_MON_PWR_GOOD: u32 = 1 << 14;
+            pub const MGMT_SYS_MON_NMI_BTN_L: u32 = 1 << 13;
+            pub const MGMT_SYS_MON_PWR_BTN_L: u32 = 1 << 12;
+            pub const MGMT_SYS_MON_RST_BTN_L: u32 = 1 << 11;
+            pub const DEBUG_INPUT1: u32 = 1 << 10;
+            pub const MGMT_AC_LOSS_L: u32 = 1 << 9;
+            pub const MGMT_SYS_MON_ATX_PWR_OK: u32 = 1 << 8;
+            pub const MGMT_SYS_MON_P1_THERMTRIP_L: u32 = 1 << 7;
+            pub const MGMT_SYS_MON_P0_THERMTRIP_L: u32 = 1 << 6;
+            pub const MGMT_SYS_MON_P1_PROCHOT_L: u32 = 1 << 5;
+            pub const MGMT_SYS_MON_P0_PROCHOT_L: u32 = 1 << 4;
+            pub const MGMT_SYS_MON_RESET_L: u32 = 1 << 3;
+            pub const P1_PRESENT_L: u32 = 1 << 2;
+            pub const P0_PRESENT_L: u32 = 1 << 1;
+            pub const MGMT_SYS_MON_POST_COMPLETE: u32 = 1 << 0;
+        }
+        pub mod out1 {
+            pub const BMC_SCM_FPGA_UART_TX: u32 = 1 << 14;
+            pub const MGMT_ASSERT_NMI_BTN_L: u32 = 1 << 13;
+            pub const MGMT_ASSERT_PWR_BTN_L: u32 = 1 << 12;
+            pub const MGMT_ASSERT_RST_BTN_L: u32 = 1 << 11;
+            pub const JTAG_TRST_N: u32 = 1 << 10;
+            pub const GPIO_OUTPUT_5: u32 = 1 << 9;
+            pub const GPIO_OUTPUT_4: u32 = 1 << 8;
+            pub const GPIO_OUTPUT_3: u32 = 1 << 7;
+            pub const GPIO_OUTPUT_2: u32 = 1 << 6;
+            pub const GPIO_OUTPUT_1: u32 = 1 << 5;
+            pub const MGMT_ASSERT_CLR_CMOS: u32 = 1 << 4;
+            pub const MGMT_ASSERT_P1_PROCHOT: u32 = 1 << 3;
+            pub const MGMT_ASSERT_P0_PROCHOT: u32 = 1 << 2;
+            pub const MGMT_SOC_RESET_L: u32 = 1 << 1;
+            pub const MGMT_ASERT_WARM_RST_BTN_L: u32 = 1 << 0;
+        }
+        pub mod in1 {
+            pub const MGMT_SMBUS_ALERT_L: u32 = 1 << 15;
+            pub const HPM_BMC_GPIOI7: u32 = 1 << 14;
+            pub const ESPI_BOOT_SEL: u32 = 1 << 13;
+            pub const I2C_BMC_MB_ALERT_S: u32 = 1 << 12;
+            pub const GPIO_INPUT_6: u32 = 1 << 8;
+            pub const GPIO_INPUT_5: u32 = 1 << 7;
+            pub const GPIO_INPUT_4: u32 = 1 << 6;
+            pub const GPIO_INPUT_3: u32 = 1 << 5;
+            pub const GPIO_INPUT_2: u32 = 1 << 4;
+            pub const GPIO_INPUT_1: u32 = 1 << 3;
+            pub const HPM_BMC_GPIOM5: u32 = 1 << 2;
+            pub const HPM_BMC_GPIOM4: u32 = 1 << 1;
+            pub const HPM_BMC_GPIOM3: u32 = 1 << 0;
+        }
+    }
+}
+
 mod idl {
     use drv_cpu_seq_api::{SeqError, StateChangeReason};
     include!(concat!(env!("OUT_DIR"), "/server_stub.rs"));