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72 lines
2.7 KiB
Diff
72 lines
2.7 KiB
Diff
From ab4c93cb4bb443620e141cc70f274b89a51a1d05 Mon Sep 17 00:00:00 2001
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From: Eric Snowberg <eric.snowberg@oracle.com>
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Date: Mon, 26 Feb 2018 17:34:19 -0800
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Subject: [PATCH] sparc64: #blocks disk node method
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Return the number of blocks of storage associated with the device or
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instance. Where a "block" is a unit of storage consisting of the number
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of bytes returned by the package's "block-size" method. If the size cannot
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be determined, the #blocks method returns the maximum unsigned integer
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(which, because of Open Firmware's assumption of two's complement arithmetic,
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is equivalent to the signed number -1). If the number of blocks exceeds
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the range of an unsigned number, return 0 to alert the caller to try
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the #blocks64 command.
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Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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---
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grub-core/kern/sparc64/ieee1275/ieee1275.c | 31 ++++++++++++++++++++++++++++++
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include/grub/sparc64/ieee1275/ieee1275.h | 1 +
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2 files changed, 32 insertions(+)
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diff --git a/grub-core/kern/sparc64/ieee1275/ieee1275.c b/grub-core/kern/sparc64/ieee1275/ieee1275.c
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index 53be692c3d8..67933a45b35 100644
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--- a/grub-core/kern/sparc64/ieee1275/ieee1275.c
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+++ b/grub-core/kern/sparc64/ieee1275/ieee1275.c
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@@ -89,3 +89,34 @@ grub_ieee1275_alloc_physmem (grub_addr_t *paddr, grub_size_t size,
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return args.catch_result;
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}
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+
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+grub_uint64_t
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+grub_ieee1275_num_blocks (grub_ieee1275_ihandle_t ihandle)
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+{
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+ struct nblocks_args_ieee1275
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+ {
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+ struct grub_ieee1275_common_hdr common;
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+ grub_ieee1275_cell_t method;
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+ grub_ieee1275_cell_t ihandle;
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+ grub_ieee1275_cell_t catch_result;
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+ grub_ieee1275_cell_t blocks;
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+ }
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+ args;
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+
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+ INIT_IEEE1275_COMMON (&args.common, "call-method", 2, 2);
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+ args.method = (grub_ieee1275_cell_t) "#blocks";
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+ args.ihandle = ihandle;
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+ args.catch_result = 1;
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+
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+ if ((IEEE1275_CALL_ENTRY_FN (&args) == -1) || (args.catch_result != 0))
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+ return -1;
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+
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+ /*
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+ * If the number of blocks exceeds the range of an unsigned number,
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+ * return 0 to alert the caller to try the #blocks64 command.
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+ */
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+ if (args.blocks >= 0xffffffffULL)
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+ return 0;
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+
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+ return args.blocks;
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+}
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diff --git a/include/grub/sparc64/ieee1275/ieee1275.h b/include/grub/sparc64/ieee1275/ieee1275.h
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index 32c77f80f1a..2ddf44d41df 100644
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--- a/include/grub/sparc64/ieee1275/ieee1275.h
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+++ b/include/grub/sparc64/ieee1275/ieee1275.h
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@@ -42,6 +42,7 @@ extern int EXPORT_FUNC(grub_ieee1275_claim_vaddr) (grub_addr_t vaddr,
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extern int EXPORT_FUNC(grub_ieee1275_alloc_physmem) (grub_addr_t *paddr,
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grub_size_t size,
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grub_uint32_t align);
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+extern grub_uint64_t EXPORT_FUNC(grub_ieee1275_num_blocks) (grub_uint32_t ihandle);
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extern grub_addr_t EXPORT_VAR (grub_ieee1275_original_stack);
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