74xx: use r4 instead of r2 in lock_ram_in_cache and unlock_ram_in_cache
The patch is following the commit 3924384060
mpc86xx: use r4 instead of r2 in lock_ram_in_cache and unlock_ram_in_cache
This is needed in unlock_ram_in_cache() because it is called from C and
will corrupt the small data area anchor that is kept in R2.
lock_ram_in_cache() is modified similarly as good coding practice, but
is not called from C.
Signed-off-by: Nick Spence <nick.spence@freescale.com>
also, the r2 is used as global data pointer.
Signed-off-by: Dave Liu <daveliu@freescale.com>
This commit is contained in:
parent
d344293a5b
commit
d685b74c64
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@ -857,9 +857,9 @@ lock_ram_in_cache:
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*/
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*/
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lis r3, (CONFIG_SYS_INIT_RAM_ADDR & ~31)@h
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lis r3, (CONFIG_SYS_INIT_RAM_ADDR & ~31)@h
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ori r3, r3, (CONFIG_SYS_INIT_RAM_ADDR & ~31)@l
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ori r3, r3, (CONFIG_SYS_INIT_RAM_ADDR & ~31)@l
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li r2, ((CONFIG_SYS_INIT_RAM_END & ~31) + \
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li r4, ((CONFIG_SYS_INIT_RAM_END & ~31) + \
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(CONFIG_SYS_INIT_RAM_ADDR & 31) + 31) / 32
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(CONFIG_SYS_INIT_RAM_ADDR & 31) + 31) / 32
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mtctr r2
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mtctr r4
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1:
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1:
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dcbz r0, r3
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dcbz r0, r3
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addi r3, r3, 32
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addi r3, r3, 32
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@ -878,9 +878,9 @@ unlock_ram_in_cache:
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/* invalidate the INIT_RAM section */
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/* invalidate the INIT_RAM section */
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lis r3, (CONFIG_SYS_INIT_RAM_ADDR & ~31)@h
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lis r3, (CONFIG_SYS_INIT_RAM_ADDR & ~31)@h
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ori r3, r3, (CONFIG_SYS_INIT_RAM_ADDR & ~31)@l
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ori r3, r3, (CONFIG_SYS_INIT_RAM_ADDR & ~31)@l
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li r2, ((CONFIG_SYS_INIT_RAM_END & ~31) + \
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li r4, ((CONFIG_SYS_INIT_RAM_END & ~31) + \
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(CONFIG_SYS_INIT_RAM_ADDR & 31) + 31) / 32
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(CONFIG_SYS_INIT_RAM_ADDR & 31) + 31) / 32
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mtctr r2
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mtctr r4
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1: icbi r0, r3
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1: icbi r0, r3
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addi r3, r3, 32
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addi r3, r3, 32
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bdnz 1b
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bdnz 1b
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