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R0.13 patch 2

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September 2, 2017

f_fdisk function and f_mkfs function create the partition table with
wrong C-H-S parameters.
This commit is contained in:
Christopher Williams
2017-09-20 17:43:22 -07:00
parent 1e373ffb3f
commit 5c7915feab
1 changed files with 5 additions and 5 deletions
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source/ff.c
+5 -5
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@@ -5764,7 +5764,7 @@ FRESULT f_mkfs (
pte[PTE_System] = sys; /* System type */ pte[PTE_System] = sys; /* System type */
n = (b_vol + sz_vol) / (63 * 255); /* (End CHS may be invalid) */ n = (b_vol + sz_vol) / (63 * 255); /* (End CHS may be invalid) */
pte[PTE_EdHead] = 254; /* End head */ pte[PTE_EdHead] = 254; /* End head */
pte[PTE_EdSec] = (BYTE)(n >> 2 | 63); /* End sector */ pte[PTE_EdSec] = (BYTE)(((n >> 2) & 0xC0) | 63); /* End sector */
pte[PTE_EdCyl] = (BYTE)n; /* End cylinder */ pte[PTE_EdCyl] = (BYTE)n; /* End cylinder */
st_dword(pte + PTE_StLba, b_vol); /* Start offset in LBA */ st_dword(pte + PTE_StLba, b_vol); /* Start offset in LBA */
st_dword(pte + PTE_SizLba, sz_vol); /* Size in sectors */ st_dword(pte + PTE_SizLba, sz_vol); /* Size in sectors */
@@ -5827,12 +5827,12 @@ FRESULT f_fdisk (
/* Set partition table */ /* Set partition table */
p[1] = s_hd; /* Start head */ p[1] = s_hd; /* Start head */
p[2] = (BYTE)((b_cyl >> 2) + 1); /* Start sector */ p[2] = (BYTE)(((b_cyl >> 2) & 0xC0) | 1); /* Start sector and cylinder high */
p[3] = (BYTE)b_cyl; /* Start cylinder */ p[3] = (BYTE)b_cyl; /* Start cylinder low */
p[4] = 0x07; /* System type (temporary setting) */ p[4] = 0x07; /* System type (temporary setting) */
p[5] = e_hd; /* End head */ p[5] = e_hd; /* End head */
p[6] = (BYTE)((e_cyl >> 2) + 63); /* End sector */ p[6] = (BYTE)(((e_cyl >> 2) & 0xC0) | 63); /* End sector and cylinder high */
p[7] = (BYTE)e_cyl; /* End cylinder */ p[7] = (BYTE)e_cyl; /* End cylinder low */
st_dword(p + 8, s_part); /* Start sector in LBA */ st_dword(p + 8, s_part); /* Start sector in LBA */
st_dword(p + 12, sz_part); /* Number of sectors */ st_dword(p + 12, sz_part); /* Number of sectors */