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grub2/0027-arm_coreboot-Support-DMA.patch
Javier Martinez Canillas afb0baacd6
Use BLS fragment filename as menu entry id and for sort criterion 
The BLS config filenames are guaranteed to be unique, so they can be
used as GRUB2 entry id and can also be used to sort the menu entries.

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
2018-07-02 17:33:09 +02:00

292 lines
9.6 KiB
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From 265292f2b0da0eb414c409871ba0f94a99ec33c1 Mon Sep 17 00:00:00 2001
From: Vladimir Serbinenko <phcoder@gmail.com>
Date: Mon, 8 May 2017 22:06:04 +0200
Subject: [PATCH 027/250] arm_coreboot: Support DMA.
This is needed to support USB and some other busses.
---
grub-core/Makefile.core.def | 1 +
grub-core/kern/arm/cache.c | 34 ++++++++++++++++++++++
grub-core/kern/arm/coreboot/dma.c | 59 +++++++++++++++++++++++++++++++++++++++
include/grub/cache.h | 7 ++---
include/grub/dma.h | 44 +++++++++++++++++++++++++++++
include/grub/pci.h | 22 +--------------
grub-core/kern/arm/cache_armv7.S | 12 ++++++++
grub-core/Makefile.am | 1 +
8 files changed, 155 insertions(+), 25 deletions(-)
create mode 100644 grub-core/kern/arm/coreboot/dma.c
create mode 100644 include/grub/dma.h
diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def
index 6be6e7f61ee..e4f253a205e 100644
--- a/grub-core/Makefile.core.def
+++ b/grub-core/Makefile.core.def
@@ -163,6 +163,7 @@ kernel = {
arm_coreboot = term/ps2.c;
arm_coreboot = term/arm/pl050.c;
arm_coreboot = commands/keylayouts.c;
+ arm_coreboot = kern/arm/coreboot/dma.c;
terminfoinkernel = term/terminfo.c;
terminfoinkernel = term/tparm.c;
diff --git a/grub-core/kern/arm/cache.c b/grub-core/kern/arm/cache.c
index 34154ccdb0e..af1c4bbf544 100644
--- a/grub-core/kern/arm/cache.c
+++ b/grub-core/kern/arm/cache.c
@@ -29,6 +29,8 @@ void grub_arm_clean_dcache_range_armv6 (grub_addr_t start, grub_addr_t end,
grub_addr_t dlinesz);
void grub_arm_clean_dcache_range_armv7 (grub_addr_t start, grub_addr_t end,
grub_addr_t dlinesz);
+void grub_arm_clean_dcache_range_poc_armv7 (grub_addr_t start, grub_addr_t end,
+ grub_addr_t dlinesz);
void grub_arm_invalidate_icache_range_armv6 (grub_addr_t start, grub_addr_t end,
grub_addr_t dlinesz);
void grub_arm_invalidate_icache_range_armv7 (grub_addr_t start, grub_addr_t end,
@@ -252,6 +254,38 @@ grub_arch_sync_caches (void *address, grub_size_t len)
}
}
+void
+grub_arch_sync_dma_caches (volatile void *address, grub_size_t len)
+{
+ grub_addr_t start = (grub_addr_t) address;
+ grub_addr_t end = start + len;
+
+ if (type == ARCH_UNKNOWN)
+ probe_caches ();
+ start = ALIGN_DOWN (start, grub_arch_cache_max_linesz);
+ end = ALIGN_UP (end, grub_arch_cache_max_linesz);
+ switch (type)
+ {
+ case ARCH_ARMV6:
+ grub_arm_clean_dcache_range_armv6 (start, end, grub_arch_cache_dlinesz);
+ grub_arm_invalidate_icache_range_armv6 (start, end,
+ grub_arch_cache_ilinesz);
+ break;
+ case ARCH_ARMV5_WRITE_THROUGH:
+ case ARCH_ARMV6_UNIFIED:
+ grub_arm_clean_dcache_range_armv6 (start, end, grub_arch_cache_dlinesz);
+ break;
+ case ARCH_ARMV7:
+ grub_arm_clean_dcache_range_poc_armv7 (start, end, grub_arch_cache_dlinesz);
+ grub_arm_invalidate_icache_range_armv7 (start, end,
+ grub_arch_cache_ilinesz);
+ break;
+ /* Pacify GCC. */
+ case ARCH_UNKNOWN:
+ break;
+ }
+}
+
void
grub_arm_disable_caches_mmu (void)
{
diff --git a/grub-core/kern/arm/coreboot/dma.c b/grub-core/kern/arm/coreboot/dma.c
new file mode 100644
index 00000000000..2c2a6278904
--- /dev/null
+++ b/grub-core/kern/arm/coreboot/dma.c
@@ -0,0 +1,59 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2007,2009 Free Software Foundation, Inc.
+ *
+ * GRUB 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/dl.h>
+#include <grub/dma.h>
+#include <grub/mm.h>
+#include <grub/misc.h>
+#include <grub/mm_private.h>
+#include <grub/cache.h>
+
+struct grub_pci_dma_chunk *
+grub_memalign_dma32 (grub_size_t align, grub_size_t size)
+{
+ void *ret;
+ if (align < 64)
+ align = 64;
+ size = ALIGN_UP (size, align);
+ ret = grub_memalign (align, size);
+ if (!ret)
+ return 0;
+ grub_arch_sync_dma_caches (ret, size);
+ return ret;
+}
+
+void
+grub_dma_free (struct grub_pci_dma_chunk *ch)
+{
+ grub_size_t size = (((struct grub_mm_header *) ch) - 1)->size * GRUB_MM_ALIGN;
+ grub_arch_sync_dma_caches (ch, size);
+ grub_free (ch);
+}
+
+volatile void *
+grub_dma_get_virt (struct grub_pci_dma_chunk *ch)
+{
+ return (void *) ch;
+}
+
+grub_uint32_t
+grub_dma_get_phys (struct grub_pci_dma_chunk *ch)
+{
+ return (grub_uint32_t) (grub_addr_t) ch;
+}
+
diff --git a/include/grub/cache.h b/include/grub/cache.h
index fc669dfd189..1c98ce270b6 100644
--- a/include/grub/cache.h
+++ b/include/grub/cache.h
@@ -34,15 +34,14 @@ void EXPORT_FUNC(grub_arch_sync_caches) (void *address, grub_size_t len);
#endif
#ifndef GRUB_MACHINE_EMU
-#ifdef _mips
-void EXPORT_FUNC(grub_arch_sync_dma_caches) (volatile void *address,
- grub_size_t len);
-#else
+#if defined (__i386__) || defined (__x86_64__)
static inline void
grub_arch_sync_dma_caches (volatile void *address __attribute__ ((unused)),
grub_size_t len __attribute__ ((unused)))
{
}
+#else
+void EXPORT_FUNC(grub_arch_sync_dma_caches) (volatile void *address, grub_size_t len);
#endif
#endif
diff --git a/include/grub/dma.h b/include/grub/dma.h
new file mode 100644
index 00000000000..19992ebc131
--- /dev/null
+++ b/include/grub/dma.h
@@ -0,0 +1,44 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2008,2009 Free Software Foundation, Inc.
+ *
+ * GRUB 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_DMA_H
+#define GRUB_DMA_H 1
+
+struct grub_pci_dma_chunk;
+
+struct grub_pci_dma_chunk *EXPORT_FUNC(grub_memalign_dma32) (grub_size_t align,
+ grub_size_t size);
+void EXPORT_FUNC(grub_dma_free) (struct grub_pci_dma_chunk *ch);
+volatile void *EXPORT_FUNC(grub_dma_get_virt) (struct grub_pci_dma_chunk *ch);
+grub_uint32_t EXPORT_FUNC(grub_dma_get_phys) (struct grub_pci_dma_chunk *ch);
+
+static inline void *
+grub_dma_phys2virt (grub_uint32_t phys, struct grub_pci_dma_chunk *chunk)
+{
+ return ((grub_uint8_t *) grub_dma_get_virt (chunk)
+ + (phys - grub_dma_get_phys (chunk)));
+}
+
+static inline grub_uint32_t
+grub_dma_virt2phys (volatile void *virt, struct grub_pci_dma_chunk *chunk)
+{
+ return (((grub_uint8_t *) virt - (grub_uint8_t *) grub_dma_get_virt (chunk))
+ + grub_dma_get_phys (chunk));
+}
+
+#endif
diff --git a/include/grub/pci.h b/include/grub/pci.h
index 70d9a05131b..262c89b748b 100644
--- a/include/grub/pci.h
+++ b/include/grub/pci.h
@@ -142,27 +142,7 @@ grub_pci_address_t EXPORT_FUNC(grub_pci_make_address) (grub_pci_device_t dev,
void EXPORT_FUNC(grub_pci_iterate) (grub_pci_iteratefunc_t hook,
void *hook_data);
-struct grub_pci_dma_chunk;
-
-struct grub_pci_dma_chunk *EXPORT_FUNC(grub_memalign_dma32) (grub_size_t align,
- grub_size_t size);
-void EXPORT_FUNC(grub_dma_free) (struct grub_pci_dma_chunk *ch);
-volatile void *EXPORT_FUNC(grub_dma_get_virt) (struct grub_pci_dma_chunk *ch);
-grub_uint32_t EXPORT_FUNC(grub_dma_get_phys) (struct grub_pci_dma_chunk *ch);
-
-static inline void *
-grub_dma_phys2virt (grub_uint32_t phys, struct grub_pci_dma_chunk *chunk)
-{
- return ((grub_uint8_t *) grub_dma_get_virt (chunk)
- + (phys - grub_dma_get_phys (chunk)));
-}
-
-static inline grub_uint32_t
-grub_dma_virt2phys (volatile void *virt, struct grub_pci_dma_chunk *chunk)
-{
- return (((grub_uint8_t *) virt - (grub_uint8_t *) grub_dma_get_virt (chunk))
- + grub_dma_get_phys (chunk));
-}
+#include <grub/dma.h>
grub_uint8_t
EXPORT_FUNC (grub_pci_find_capability) (grub_pci_device_t dev, grub_uint8_t cap);
diff --git a/grub-core/kern/arm/cache_armv7.S b/grub-core/kern/arm/cache_armv7.S
index 1ef2754af8a..5ae76a3d819 100644
--- a/grub-core/kern/arm/cache_armv7.S
+++ b/grub-core/kern/arm/cache_armv7.S
@@ -33,6 +33,18 @@
# define ISB isb
#define ARMV7 1
+FUNCTION(grub_arm_clean_dcache_range_poc_armv7)
+ DSB
+ @ Clean data cache for range to point-of-coherence
+1: cmp r0, r1
+ bge 2f
+ mcr p15, 0, r0, c7, c14, 1 @ DCCMVAC
+ add r0, r0, r2 @ Next line
+ b 1b
+2: DSB
+ bx lr
+
+
@ r0 - CLIDR
@ r1 - LoC
@ r2 - current level
diff --git a/grub-core/Makefile.am b/grub-core/Makefile.am
index a2aaf9f54b0..10451384720 100644
--- a/grub-core/Makefile.am
+++ b/grub-core/Makefile.am
@@ -248,6 +248,7 @@ KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/gfxterm.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/font.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/bufio.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/fdt.h
+KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/dma.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/arm/coreboot/kernel.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/fdtbus.h
endif
--
2.17.1
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