Comments (3)
Did you mean something like that (https://elixir.bootlin.com/u-boot/latest/source/arch/arc/lib/start.S)?
__KEEPIDENTS__B(__KEEPIDENTS__C)
/* Setup interrupt vector base that matches "__text_start" */
sr __KEEPIDENTS__D, [__KEEPIDENTS__E]
; Disable/enable I-__KEEPIDENTS__F according to configuration
__KEEPIDENTS__G __KEEPIDENTS__H, [__KEEPIDENTS__I]
breq __KEEPIDENTS__J, 0, 1f ; I$ doesn't exist
lr r5, [ARC_AUX_IC_CTRL]
#if !CONFIG_IS_ENABLED(SYS_ICACHE_OFF)
bclr r5, r5, 0 ; 0 - Enable, 1 is Disable
#else
bset r5, r5, 0 ; I$ exists, but is not used
#endif
sr r5, [ARC_AUX_IC_CTRL]
Note all that nonsense of __KEEPIDENTS__
:)
In reality it should be like that ():
ENTRY(_start)
/* Setup interrupt vector base that matches "__text_start" */
sr __ivt_start, [ARC_AUX_INTR_VEC_BASE]
; Disable/enable I-cache according to configuration
lr r5, [ARC_BCR_IC_BUILD]
breq r5, 0, 1f ; I$ doesn't exist
lr r5, [ARC_AUX_IC_CTRL]
#if !CONFIG_IS_ENABLED(SYS_ICACHE_OFF)
bclr r5, r5, 0 ; 0 - Enable, 1 is Disable
#else
bset r5, r5, 0 ; I$ exists, but is not used
#endif
sr r5, [ARC_AUX_IC_CTRL]
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Apparently closed in version 2.0
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Indeed I do see it all correct now https://elixir.bootlin.com/u-boot/latest/source/arch/arc/lib/start.S
ENTRY(_start)
/* Setup interrupt vector base that matches "__text_start" */
sr __ivt_start, [ARC_AUX_INTR_VEC_BASE]
; Disable/enable I-cache according to configuration
lr r5, [ARC_BCR_IC_BUILD]
breq r5, 0, 1f ; I$ doesn't exist
lr r5, [ARC_AUX_IC_CTRL]
#if !CONFIG_IS_ENABLED(SYS_ICACHE_OFF)
bclr r5, r5, 0 ; 0 - Enable, 1 is Disable
#else
bset r5, r5, 0 ; I$ exists, but is not used
#endif
sr r5, [ARC_AUX_IC_CTRL]
And thanks for all the fish! (C)
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