109 lines
1.6 KiB
C
109 lines
1.6 KiB
C
#ifndef __ZBOOT_MACRO_H
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#define __ZBOOT_MACRO_H
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/* The LIST command is used to include comments in the script */
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.macro LIST comment
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.endm
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/* The ED command is used to write a 32-bit word */
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.macro ED, addr, data
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LDR r0, 1f
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LDR r1, 2f
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STR r1, [r0]
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B 3f
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1 : .long \addr
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2 : .long \data
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3 :
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.endm
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/* The EW command is used to write a 16-bit word */
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.macro EW, addr, data
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LDR r0, 1f
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LDR r1, 2f
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STRH r1, [r0]
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B 3f
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1 : .long \addr
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2 : .long \data
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3 :
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.endm
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/* The EB command is used to write an 8-bit word */
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.macro EB, addr, data
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LDR r0, 1f
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LDR r1, 2f
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STRB r1, [r0]
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B 3f
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1 : .long \addr
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2 : .long \data
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3 :
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.endm
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/* The WAIT command is used to delay the execution */
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.macro WAIT, time, reg
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LDR r1, 1f
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LDR r0, 2f
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STR r0, [r1]
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10 :
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LDR r0, [r1]
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CMP r0, #0x00000000
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BNE 10b
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NOP
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B 3f
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1 : .long \reg
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2 : .long \time * 100
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3 :
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.endm
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/* The DD command is used to read a 32-bit word */
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.macro DD, start, end
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LDR r1, 1f
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B 2f
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1 : .long \start
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2 :
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.endm
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/* loop until a given value has been read (with mask) */
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.macro WAIT_MASK, addr, data, cmp
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LDR r0, 2f
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LDR r1, 3f
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LDR r2, 4f
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1:
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LDR r3, [r0, #0]
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AND r3, r1, r3
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CMP r2, r3
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BNE 1b
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B 5f
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2: .long \addr
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3: .long \data
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4: .long \cmp
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5:
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.endm
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/* read 32-bit value from addr, "or" an immediate and write back */
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.macro ED_OR, addr, data
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LDR r4, 1f
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LDR r5, 2f
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LDR r6, [r4]
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ORR r5, r6, r5
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STR r5, [r4]
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B 3f
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1: .long \addr
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2: .long \data
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3:
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.endm
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/* read 32-bit value from addr, "and" an immediate and write back */
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.macro ED_AND, addr, data
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LDR r4, 1f
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LDR r5, 2f
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LDR r6, [r4]
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AND r5, r6, r5
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STR r5, [r4]
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B 3f
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1: .long \addr
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2: .long \data
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3:
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.endm
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#endif /* __ZBOOT_MACRO_H */
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