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authorAlexandru Gagniuc <mr.nuke.me@gmail.com>2013-05-21 14:51:26 -0500
committerRonald G. Minnich <rminnich@gmail.com>2013-06-10 23:00:53 +0200
commit37a8a8bd9e9d37da1e899297dbb43c0033cfd6c4 (patch)
tree7f61209bd44513fc0293e45722d660afe7b58af9 /src/mainboard/via/epia-m850
parent23211b0200eac11c64fe9dadadb5ec5ef1deabc6 (diff)
downloadcoreboot-37a8a8bd9e9d37da1e899297dbb43c0033cfd6c4.tar.xz
Add support for VIA EPIA-M850 board
EPIA-M850 can now boot linux. For a list of issues, see: http://www.coreboot.org/VIA_EPIA-M850 That's all folks. Change-Id: I7624944dbc05fbf3019897a116954d71dfda0031 Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-on: http://review.coreboot.org/1228 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/mainboard/via/epia-m850')
-rw-r--r--src/mainboard/via/epia-m850/Kconfig49
-rw-r--r--src/mainboard/via/epia-m850/Makefile.inc21
-rw-r--r--src/mainboard/via/epia-m850/devicetree.cb111
-rw-r--r--src/mainboard/via/epia-m850/irq_tables.c75
-rw-r--r--src/mainboard/via/epia-m850/mainboard.c111
-rw-r--r--src/mainboard/via/epia-m850/romstage.c130
6 files changed, 497 insertions, 0 deletions
diff --git a/src/mainboard/via/epia-m850/Kconfig b/src/mainboard/via/epia-m850/Kconfig
new file mode 100644
index 0000000000..01ef032c4e
--- /dev/null
+++ b/src/mainboard/via/epia-m850/Kconfig
@@ -0,0 +1,49 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2011-2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
+##
+## This program is free software: you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation, either version 2 of the License, or
+## (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program. If not, see <http://www.gnu.org/licenses/>.
+##
+
+if BOARD_VIA_EPIA_M850
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+ def_bool y
+ select ARCH_X86
+ select CPU_VIA_NANO
+ select NORTHBRIDGE_VIA_VX900
+ select SUPERIO_FINTEK_F81865F
+ select HAVE_PIRQ_TABLE
+ select PIRQ_ROUTE
+ select HAVE_MP_TABLE
+ #select HAVE_OPTION_TABLE
+ #select HAVE_ACPI_TABLES
+ #select HAVE_ACPI_RESUME
+ #select BOARD_HAS_FADT
+ select BOARD_ROMSIZE_KB_512
+
+config MAINBOARD_DIR
+ string
+ default via/epia-m850
+
+config MAINBOARD_PART_NUMBER
+ string
+ default "EPIA-M850"
+
+config IRQ_SLOT_COUNT
+ int
+ default 13
+
+endif # BOARD_VIA_EPIA_M850
diff --git a/src/mainboard/via/epia-m850/Makefile.inc b/src/mainboard/via/epia-m850/Makefile.inc
new file mode 100644
index 0000000000..9c6d31f3ff
--- /dev/null
+++ b/src/mainboard/via/epia-m850/Makefile.inc
@@ -0,0 +1,21 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2011 Alexandru Gagniuc <mr.nuke.me@gmail.com>
+##
+## This program is free software: you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation, either version 2 of the License, or
+## (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program. If not, see <http://www.gnu.org/licenses/>.
+##
+
+#romstage-y += ./../../../superio/fintek/f81865f/f81865f_early_serial.c
+
diff --git a/src/mainboard/via/epia-m850/devicetree.cb b/src/mainboard/via/epia-m850/devicetree.cb
new file mode 100644
index 0000000000..0c21cc8f58
--- /dev/null
+++ b/src/mainboard/via/epia-m850/devicetree.cb
@@ -0,0 +1,111 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2011-2013 Alexandru Gagniuc <mr.nuke.me@gmail.com>
+##
+## This program is free software: you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation, either version 2 of the License, or
+## (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program. If not, see <http://www.gnu.org/licenses/>.
+##
+
+chip northbridge/via/vx900 # Northbridge
+ register "assign_pex_to_dp" = "0"
+ register "pcie_port1_2_lane_wide" = "1"
+ register "ext_int_route_to_pirq" = "'H'"
+
+ device cpu_cluster 0 on # APIC cluster
+ chip cpu/via/nano # VIA NANO
+ device lapic 0 on end # APIC
+ end
+ end
+ device domain 0 on
+ device pci 0.0 on end # [0410] Host controller
+ device pci 0.1 on end # [1410] Error Reporting
+ device pci 0.2 on end # [2410] CPU Bus Control
+ device pci 0.3 on end # [3410] DRAM Bus Control
+ device pci 0.4 on end # [4410] Power Management
+ device pci 0.5 on # [5410] APIC+Traffic Control
+ chip drivers/generic/ioapic
+ register "have_isa_interrupts" = "0"
+ register "irq_on_fsb" = "1"
+ register "enable_virtual_wire" = "1"
+ register "base" = "0xfecc0000"
+ device ioapic 2 on end
+ end
+ end
+ device pci 0.6 off end # [6410] Scratch Registers
+ device pci 0.7 on end # [7410] V4 Link Control
+ device pci 1.0 on # [7122] VGA Chrome9 HD
+ ioapic_irq 2 INTA 0x28
+ end
+ device pci 1.1 on # [9170] Audio Device
+ ioapic_irq 2 INTA 0x29
+ end
+ device pci 3.0 on end # [a410] PEX1
+ device pci 3.1 on end # [b410] PEX2
+ device pci 3.2 on end # [c410] PEX3
+ device pci 3.3 on end # [d410] PEX4
+ device pci 3.4 on end # [e410] PCIE bridge
+ device pci b.0 on end # [a409] USB Device
+ device pci c.0 off end # [95d0] SDIO Host Controller
+ device pci d.0 off end # [9530] Memory Card controller
+ device pci f.0 on # [9001] SATA Controller
+ ioapic_irq 1 INTA 0x15
+ end
+ device pci 10.0 on end # [3038] USB 1.1
+ device pci 10.1 on end # [3038] USB 1.1
+ device pci 10.2 on end # [3038] USB 1.1
+ device pci 10.3 on end # [3038] USB 1.1
+ device pci 10.4 on end # [3104] USB 2.0
+ device pci 11.0 on # [8410] LPC Bus Control
+ chip drivers/generic/ioapic
+ register "have_isa_interrupts" = "1"
+ register "irq_on_fsb" = "1"
+ register "enable_virtual_wire" = "1"
+ register "base" = "0xfec00000"
+ device ioapic 1 on end
+ end
+ #chip drivers/generic/generic # DIMM 0 channel 1
+ # device i2c 50 on end
+ #end
+ #chip drivers/generic/generic # DIMM 1 channel 1
+ # device i2c 51 on end
+ #end
+ chip superio/fintek/f81865f # Super duper IO
+ device pnp 4e.0 off end # Floppy
+ device pnp 4e.3 off end # Parallel Port
+ device pnp 4e.4 off end # Hardware Monitor
+ device pnp 4e.5 off end # Keyboard not here
+ device pnp 4e.6 off end # GPIO
+ device pnp 4e.a off end # PME
+ device pnp 4e.10 on # COM1
+ io 0x60 = 0x3f8
+ irq 0x70 = 4
+ end
+ device pnp 4e.11 on # COM2
+ io 0x60 = 0x2f8
+ irq 0x70 = 3
+ end
+ device pnp 4e.12 on # COM3
+ io 0x60 = 0x3e8
+ irq 0x70 = 10
+ end
+ device pnp 4e.13 on # COM4
+ io 0x60 = 0x2e8
+ irq 0x70 = 11
+ end
+ end # superio/fintek/f81865f
+ end # LPC
+ device pci 11.7 on end # [a353] North-South control
+ device pci 14.0 on end # [3288] Azalia HDAC
+ end
+end
diff --git a/src/mainboard/via/epia-m850/irq_tables.c b/src/mainboard/via/epia-m850/irq_tables.c
new file mode 100644
index 0000000000..28fbb4f21a
--- /dev/null
+++ b/src/mainboard/via/epia-m850/irq_tables.c
@@ -0,0 +1,75 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <arch/pirq_routing.h>
+#include <console/console.h>
+#include <device/pci_ids.h>
+#include <string.h> /* <- For memset */
+
+#define _OFF 0x00
+#define ___OFF 0x0000
+#define LNKA 1
+#define LNKB 2
+#define LNKC 3
+#define LNKD 4
+#define LNKE 5
+#define LNKF 6
+#define LNKG 7
+#define LNKH 8
+#define BITMAP 0xdce0
+/* The link that carries the SATA interrupt has its own mask, just in case
+ * we want to make sure our SATA controller gets mapped to IRQ 14 */
+#define B_SATA BITMAP
+
+const struct irq_routing_table intel_irq_routing_table = {
+ PIRQ_SIGNATURE, /* u32 signature */
+ PIRQ_VERSION, /* u16 version */
+ 32 + 16 * 13, /* Max. number of devices on the bus */
+ 0x00, /* Interrupt router bus */
+ (0x11 << 3) | 0x0, /* Interrupt router dev */
+ 0, /* IRQs devoted exclusively for PCI */
+ PCI_VENDOR_ID_VIA, /* Vendor */
+ PCI_DEVICE_ID_VIA_VX900_LPC, /* Device */
+ 0, /* Miniport */
+ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* u8 rfu[11] */
+ 0x19, /* Checksum (has to be set to some value that
+ * would give 0 after the sum of all bytes
+ * for this structure (including checksum). */
+ {
+ /* bus, dev | fn, {link, bitmap}, {link, bitmap}, {link, bitmap}, {link, bitmap}, slot, rfu */
+ {0x00, (0x01 << 3) | 0x0, {{LNKH, BITMAP}, {LNKH, BITMAP}, {_OFF, ___OFF}, {_OFF, ___OFF}}, 0x0, 0x0},
+ {0x00, (0x03 << 3) | 0x0, {{LNKH, BITMAP}, {LNKH, BITMAP}, {LNKH, BITMAP}, {LNKH, BITMAP}}, 0x0, 0x0},
+ {0x00, (0x0a << 3) | 0x0, {{LNKA, BITMAP}, {LNKB, B_SATA}, {LNKC, BITMAP}, {LNKD, BITMAP}}, 0x0, 0x0},
+ {0x00, (0x0b << 3) | 0x0, {{LNKA, BITMAP}, {_OFF, ___OFF}, {_OFF, ___OFF}, {_OFF, ___OFF}}, 0x0, 0x0},
+ {0x00, (0x0c << 3) | 0x0, {{LNKA, BITMAP}, {_OFF, ___OFF}, {_OFF, ___OFF}, {_OFF, ___OFF}}, 0x0, 0x0},
+ {0x00, (0x0d << 3) | 0x0, {{LNKA, BITMAP}, {_OFF, ___OFF}, {_OFF, ___OFF}, {_OFF, ___OFF}}, 0x0, 0x0},
+ {0x00, (0x0f << 3) | 0x0, {{LNKB, B_SATA}, {_OFF, ___OFF}, {_OFF, ___OFF}, {_OFF, ___OFF}}, 0x0, 0x0},
+ {0x00, (0x10 << 3) | 0x0, {{LNKA, BITMAP}, {LNKB, B_SATA}, {LNKC, BITMAP}, {LNKD, BITMAP}}, 0x0, 0x0},
+ {0x00, (0x14 << 3) | 0x0, {{LNKB, B_SATA}, {_OFF, ___OFF}, {_OFF, ___OFF}, {_OFF, ___OFF}}, 0x0, 0x0},
+ {0x01, (0x00 << 3) | 0x0, {{LNKH, BITMAP}, {LNKH, BITMAP}, {LNKH, BITMAP}, {LNKH, BITMAP}}, 0x1, 0x0},
+ {0x02, (0x00 << 3) | 0x0, {{LNKH, BITMAP}, {LNKH, BITMAP}, {LNKH, BITMAP}, {LNKH, BITMAP}}, 0x2, 0x0},
+ {0x03, (0x00 << 3) | 0x0, {{LNKH, BITMAP}, {LNKH, BITMAP}, {LNKH, BITMAP}, {LNKH, BITMAP}}, 0x0, 0x0},
+ {0x04, (0x00 << 3) | 0x0, {{LNKH, BITMAP}, {LNKH, BITMAP}, {LNKH, BITMAP}, {LNKH, BITMAP}}, 0x0, 0x0},
+ }
+};
+
+unsigned long write_pirq_routing_table(unsigned long addr)
+{
+ return copy_pirq_routing_table(addr, &intel_irq_routing_table);
+}
diff --git a/src/mainboard/via/epia-m850/mainboard.c b/src/mainboard/via/epia-m850/mainboard.c
new file mode 100644
index 0000000000..dbe682cfce
--- /dev/null
+++ b/src/mainboard/via/epia-m850/mainboard.c
@@ -0,0 +1,111 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 Alexandru Gagniuc <mr.nuke.me@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <device/device.h>
+#include <device/pci_def.h>
+#include <device/pci_ops.h>
+#include <console/console.h>
+
+#if CONFIG_VGA_ROM_RUN
+
+#include <arch/interrupt.h>
+#include <x86emu/x86emu.h>
+
+#include <northbridge/via/vx900/vx900.h>
+
+static int vx900_int15_handler(void)
+{
+ int res;
+
+ printk(BIOS_DEBUG, "%s %0x\n", __func__, X86_AX & 0xffff);
+ /* Set AX return value here so we don't set it every time. Just set it
+ * to something else if the callback is unsupported */
+ res = -1;
+ switch (X86_AX & 0xffff) {
+#if 0
+ case 0x5f01:
+ /* VGA POST - panel type */
+ /* FIXME: Don't hardcode panel type */
+ /* Panel Type Number */
+ X86_CX = 0;
+ res = 0;
+ break;
+ case 0x5f02:
+ {
+ /* Boot device selection */
+ X86_BL = INT15_5F02_BL_HWOPT_CRTCONN;
+ /* FIXME: or 0 ? */
+ X86_BH = 0; // INT15_5F02_BH_TV_CONN_DEFAULT;
+ X86_EBX = 0; // INT15_5F02_EBX_HDTV_RGB;
+ X86_ECX = INT15_5F02_ECX_DISPLAY_CRT;
+ //X86_ECX |= INT15_5F02_ECX_TV_MODE_RGB;
+ //X86_ECX |= INT15_5F02_ECX_HDTV_1080P;
+ X86_DL = INT15_5F02_DL_TV_LAYOUT_DEFAULT;
+ res = 0;
+ break;
+ }
+#endif
+ case 0x5f18:
+ X86_BL = vx900_int15_get_5f18_bl();
+ res = 0;
+ break;
+#if 0
+ case 0x5f2a:
+ /* Get SSC Control Settings */
+ /* FIXME: No idea what this does. Just disable this feature
+ * for now */
+ X86_CX = INT15_5F2A_CX_SSC_ENABLE;
+ res = 0;
+ break;
+ case 0x5f2b:
+ /* Engine clock setting */
+ /* FIXME: ECLK fixed 250MHz ? */
+ X86_EBX = INT15_5F2B_EBX_ECLK_250MHZ;
+ break;
+#endif
+ default:
+ printk(BIOS_DEBUG, "Unsupported INT15 call %04x!\n",
+ X86_AX & 0xffff);
+ X86_AX = 0;
+ res = -1;
+ break;
+ }
+
+ if (res == 0)
+ X86_AX = 0x5f;
+ else
+ X86_AX = 0;
+ return X86_AX;
+}
+#endif
+
+static void mainboard_enable(device_t dev)
+{
+ (void)dev;
+
+#if CONFIG_VGA_ROM_RUN
+ print_debug("Installing INT15 handler...\n");
+ mainboard_interrupt_handlers(0x15, &vx900_int15_handler);
+#endif
+}
+
+struct chip_operations mainboard_ops = {
+ CHIP_NAME("VIA EPIA-M850 Mainboard")
+ .enable_dev = mainboard_enable,
+};
diff --git a/src/mainboard/via/epia-m850/romstage.c b/src/mainboard/via/epia-m850/romstage.c
new file mode 100644
index 0000000000..364de4844b
--- /dev/null
+++ b/src/mainboard/via/epia-m850/romstage.c
@@ -0,0 +1,130 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011-2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * Inspired from the EPIA-M700
+ */
+#undef CONFIG_COLLECT_TIMESTAMPS
+#define CONFIG_COLLECT_TIMESTAMPS 1
+#include <stdint.h>
+#include <device/pci_def.h>
+#include <device/pci_ids.h>
+#include <arch/io.h>
+#include <device/pnp_def.h>
+#include <arch/io.h>
+#include <arch/hlt.h>
+#include <console/console.h>
+#include <lib.h>
+#include <cpu/x86/bist.h>
+#include <string.h>
+#include <timestamp.h>
+#include <console/cbmem_console.h>
+
+#include "northbridge/via/vx900/early_vx900.h"
+#include "northbridge/via/vx900/raminit.h"
+/* FIXME: This is the only .c include we couldn't get rid of */
+#include "superio/fintek/f81865f/f81865f_early_serial.c"
+
+#define SERIAL_DEV PNP_DEV(0x4e, 0x10)
+
+static inline u64 tsc2u64(tsc_t tsc)
+{
+ return ((u64) tsc.hi << 32) | tsc.lo;
+}
+
+/* FIXME: This board comes in two flavours. This is for the faster CPU, but
+ * will probably not be correct for the other CPU */
+#define TSC_PER_USEC 1297
+static inline u32 tsc2ms(u64 end, u64 start)
+{
+ return ((u32) (end - start) / TSC_PER_USEC) / 1000;
+}
+
+/* cache_as_ram.inc jumps to here. */
+void main(unsigned long bist)
+{
+ u32 tolm;
+ u64 start, end;
+ tsc_t tsc_at_romstage_start = rdtsc();
+
+ /* First thing we need to do on the VX900, before anything else */
+ vx900_enable_pci_config_space();
+
+ /* Serial console is easy to take care of */
+ f81865f_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
+ console_init();
+ print_debug("Console initialized. \n");
+
+ vx900_cpu_bus_interface_setup();
+
+ /* Be smart. Get this info */
+ vx900_print_strapping_info();
+ /* DEVEL helper */
+ vx900_disable_auto_reboot();
+ /* Halt if there was a built-in self test failure. */
+ report_bist_failure(bist);
+
+ /* Oh, almighty, give us the SMBUS */
+ enable_smbus();
+
+ tsc_t tsc_before_raminit = rdtsc();
+ /* Now we can worry about raminit.
+ * This board only has DDR3, so no need to worry about which DRAM type
+ * to use */
+ dimm_layout dimms = { {0x50, 0x51, SPD_END_LIST} };
+ vx900_init_dram_ddr3(&dimms);
+ tsc_t tsc_after_raminit = rdtsc();
+
+ /* TODO: All these ram_checks are here to ensure we test most of the RAM
+ * below 4G. They should not be needed once VX900 raminit is stable */
+ ram_check(0, 0x80);
+ ram_check(512 << 10, 0x80);
+ ram_check((1 << 20) - (1 << 10), 0x80);
+ ram_check((1 << 24), 0x80);
+ ram_check((512 + 256 - 1) << 20, 0x80);
+ ram_check(0x80c0000, 0x80);
+ tolm = ((pci_read_config16(MCU, 0x84) & 0xfff0) >> 4) << 20;
+ if (tolm > (1 * (u32) GiB))
+ ram_check(1024 << 10, 0x80);
+ if (tolm > (2 * (u32) GiB))
+ ram_check(2048 << 20, 0x80);
+
+ print_debug("We passed RAM verify\n");
+#ifdef GONFIG_EARLY_CBMEM_INIT
+ /* We got RAM working, now we can write the timestamps to RAM */
+ cbmem_initialize();
+ timestamp_init(tsc_at_romstage_start);
+ timestamp_add(TS_START_ROMSTAGE, tsc_at_romstage_start);
+ timestamp_add(TS_BEFORE_INITRAM, tsc_before_raminit);
+ timestamp_add(TS_AFTER_INITRAM, tsc_after_raminit);
+ timestamp_add_now(TS_END_ROMSTAGE);
+#endif
+ /* FIXME: See if this is needed or take this out please */
+ /* Disable Memcard and SDIO */
+ pci_mod_config8(LPC, 0x51, 0, (1 << 7) | (1 << 4));
+
+ /* Informative character. Could be removed at a later time. */
+ start = tsc2u64(tsc_at_romstage_start);
+ end = tsc2u64(tsc_before_raminit);
+ printk(BIOS_INFO, "Before raminit %ums\n", tsc2ms(end, start));
+
+ start = end;
+ end = tsc2u64(tsc_after_raminit);
+ printk(BIOS_INFO, "Actual Raminit %ums\n", tsc2ms(end, start));
+}