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From 405b6d1cdc0d3fba50b0ba846c811a6ec1939ff3 Mon Sep 17 00:00:00 2001
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From: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
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Date: Tue, 30 Apr 2013 17:37:37 +0200
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Subject: [PATCH 397/482] * grub-core/kern/mips/loongson/init.c: Support
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halt for loongson 2E.
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---
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ChangeLog | 4 ++++
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grub-core/kern/mips/loongson/init.c | 33 +++++++++++++++++++++++++++++++++
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2 files changed, 37 insertions(+)
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diff --git a/ChangeLog b/ChangeLog
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index b0ae4ee..6b5feff 100644
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--- a/ChangeLog
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+++ b/ChangeLog
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@@ -1,5 +1,9 @@
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2013-04-30 Vladimir Serbinenko <phcoder@gmail.com>
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+ * grub-core/kern/mips/loongson/init.c: Support halt for loongson 2E.
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+
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+2013-04-30 Vladimir Serbinenko <phcoder@gmail.com>
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+
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* grub-core/partmap/amiga.c: Fix size of checksummed block.
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2013-04-29 Vladimir Serbinenko <phcoder@gmail.com>
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diff --git a/grub-core/kern/mips/loongson/init.c b/grub-core/kern/mips/loongson/init.c
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index 52cbfd4..3ed1ded 100644
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--- a/grub-core/kern/mips/loongson/init.c
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+++ b/grub-core/kern/mips/loongson/init.c
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@@ -221,12 +221,45 @@ grub_machine_fini (void)
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{
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}
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+static int
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+halt_via (grub_pci_device_t dev, grub_pci_id_t pciid,
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+ void *data __attribute__ ((unused)))
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+{
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+ grub_uint16_t pm;
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+ grub_pci_address_t addr;
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+
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+ if (pciid != 0x30571106)
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+ return 0;
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+
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+ addr = grub_pci_make_address (dev, 0x40);
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+ pm = grub_pci_read (addr) & ~1;
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+
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+ if (pm == 0)
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+ {
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+ grub_pci_write (addr, 0x1801);
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+ pm = 0x1800;
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+ }
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+
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+ addr = grub_pci_make_address (dev, 0x80);
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+ grub_pci_write_byte (addr, 0xff);
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+
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+ addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND);
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+ grub_pci_write_word (addr, grub_pci_read_word (addr) | GRUB_PCI_COMMAND_IO_ENABLED);
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+
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+ /* FIXME: This one is derived from qemu. Check on real hardware. */
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+ grub_outw (0x2000, pm + 4 + GRUB_MACHINE_PCI_IO_BASE);
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+ grub_millisleep (5000);
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+
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+ return 0;
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+}
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+
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void
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grub_halt (void)
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{
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switch (grub_arch_machine)
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{
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case GRUB_ARCH_MACHINE_FULOONG2E:
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+ grub_pci_iterate (halt_via, NULL);
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break;
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case GRUB_ARCH_MACHINE_FULOONG2F:
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{
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--
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1.8.2.1
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