79 lines
1.8 KiB
Diff
79 lines
1.8 KiB
Diff
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--- a/grub-core/kern/ieee1275/openfw.c
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+++ b/grub-core/kern/ieee1275/openfw.c
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@@ -302,6 +302,34 @@
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return args.catch_result;
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}
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+/* Preallocate IEEE1275_MAX_MAP_RESOURCE map tracks to track the
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+ * map regions allocated to us by the firmware. Cannot
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+ * dynamically allocate them, since the heap is not set
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+ * yet.
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+ */
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+struct grub_map_track grub_map_track[IEEE1275_MAX_MAP_RESOURCE];
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+int grub_map_track_index=0;
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+
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+void
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+grub_releasemap ()
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+{
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+ int i=0;
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+ for (i=grub_map_track_index-1; i >= 0; i--)
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+ grub_ieee1275_release(grub_map_track[i].addr, grub_map_track[i].size);
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+ grub_map_track_index = 0;
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+ return;
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+}
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+
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+static void
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+grub_track_map (grub_addr_t addr, grub_size_t size)
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+{
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+ if (grub_map_track_index >= IEEE1275_MAX_MAP_RESOURCE)
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+ return;
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+ grub_map_track[grub_map_track_index].addr = addr;
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+ grub_map_track[grub_map_track_index++].size = size;
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+ return;
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+}
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+
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grub_err_t
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grub_claimmap (grub_addr_t addr, grub_size_t size)
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{
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@@ -317,6 +345,7 @@
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return grub_errno;
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}
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+ grub_track_map (addr, size);
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return GRUB_ERR_NONE;
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}
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--- a/include/grub/ieee1275/ieee1275.h
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+++ b/include/grub/ieee1275/ieee1275.h
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@@ -33,6 +33,12 @@
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unsigned int size;
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};
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+#define IEEE1275_MAX_MAP_RESOURCE 10
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+struct grub_map_track {
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+ grub_addr_t addr;
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+ grub_size_t size;
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+};
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+
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#define IEEE1275_MAX_PROP_LEN 8192
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#define IEEE1275_MAX_PATH_LEN 256
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@@ -228,6 +234,7 @@
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int EXPORT_FUNC(grub_ieee1275_get_block_size) (grub_ieee1275_ihandle_t ihandle);
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grub_err_t EXPORT_FUNC(grub_claimmap) (grub_addr_t addr, grub_size_t size);
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+void EXPORT_FUNC(grub_releasemap) (void);
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int
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EXPORT_FUNC(grub_ieee1275_map) (grub_addr_t phys, grub_addr_t virt,
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--- a/grub-core/kern/ieee1275/init.c
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+++ b/grub-core/kern/ieee1275/init.c
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@@ -111,6 +111,7 @@
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void
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grub_exit (void)
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{
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+ grub_releasemap();
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grub_ieee1275_exit ();
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}
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