Revision: 17094
http://sourceforge.net/p/edk2/code/17094
Author: oliviermartin
Date: 2015-04-01 11:21:10 +0000 (Wed, 01 Apr 2015)
Log Message:
-----------
ArmPlatformPkg/ArmXenRelocatablePlatformLib: Replaced tabulation by spaces
EDK2 coding style requires to use 2 spaces instead of tabulation
in source code files.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <[email protected]>
Modified Paths:
--------------
trunk/edk2/ArmPlatformPkg/ArmVirtualizationPkg/Library/ArmXenRelocatablePlatformLib/AARCH64/MemnodeParser.S
Modified:
trunk/edk2/ArmPlatformPkg/ArmVirtualizationPkg/Library/ArmXenRelocatablePlatformLib/AARCH64/MemnodeParser.S
===================================================================
---
trunk/edk2/ArmPlatformPkg/ArmVirtualizationPkg/Library/ArmXenRelocatablePlatformLib/AARCH64/MemnodeParser.S
2015-04-01 11:20:05 UTC (rev 17093)
+++
trunk/edk2/ArmPlatformPkg/ArmVirtualizationPkg/Library/ArmXenRelocatablePlatformLib/AARCH64/MemnodeParser.S
2015-04-01 11:21:10 UTC (rev 17094)
@@ -27,211 +27,211 @@
* In pseudo code, this implementation does the following:
*
* for each node {
- * have_device_type = false
- * have_reg = false
+ * have_device_type = false
+ * have_reg = false
*
- * for each property {
- * if property value == 'memory' {
- * if property name == 'device_type' {
- * have_device_type = true
- * }
- * } else {
- * if property name == 'reg' {
- * have_reg = true
- * membase = property value[0]
- * memsize = property value[1]
- * }
- * }
- * }
- * if have_device_type and have_reg {
- * return membase and memsize
- * }
+ * for each property {
+ * if property value == 'memory' {
+ * if property name == 'device_type' {
+ * have_device_type = true
+ * }
+ * } else {
+ * if property name == 'reg' {
+ * have_reg = true
+ * membase = property value[0]
+ * memsize = property value[1]
+ * }
+ * }
+ * }
+ * if have_device_type and have_reg {
+ * return membase and memsize
+ * }
* }
* return NOT_FOUND
*/
-#define FDT_MAGIC 0xedfe0dd0
+#define FDT_MAGIC 0xedfe0dd0
-#define FDT_BEGIN_NODE 0x1
-#define FDT_END_NODE 0x2
-#define FDT_PROP 0x3
-#define FDT_END 0x9
+#define FDT_BEGIN_NODE 0x1
+#define FDT_END_NODE 0x2
+#define FDT_PROP 0x3
+#define FDT_END 0x9
- xMEMSIZE .req x0 // recorded system RAM size
- xMEMBASE .req x1 // recorded system RAM base
+ xMEMSIZE .req x0 // recorded system RAM size
+ xMEMBASE .req x1 // recorded system RAM base
- xLR .req x8 // our preserved link register
- xDTP .req x9 // pointer to traverse the DT structure
- xSTRTAB .req x10 // pointer to the DTB string table
- xMEMNODE .req x11 // bit field to record found properties
+ xLR .req x8 // our preserved link register
+ xDTP .req x9 // pointer to traverse the DT structure
+ xSTRTAB .req x10 // pointer to the DTB string table
+ xMEMNODE .req x11 // bit field to record found properties
-#define HAVE_REG 0x1
-#define HAVE_DEVICE_TYPE 0x2
+#define HAVE_REG 0x1
+#define HAVE_DEVICE_TYPE 0x2
- .text
- .align 3
+ .text
+ .align 3
_memory:
- .asciz "memory"
+ .asciz "memory"
_reg:
- .asciz "reg"
+ .asciz "reg"
_device_type:
- .asciz "device_type"
+ .asciz "device_type"
- /*
- * Compare strings in x4 and x5, return in w7
- */
- .align 3
+ /*
+ * Compare strings in x4 and x5, return in w7
+ */
+ .align 3
strcmp:
- ldrb w2, [x4], #1
- ldrb w3, [x5], #1
- subs w7, w2, w3
- cbz w2, 0f
- cbz w3, 0f
- beq strcmp
-0: ret
+ ldrb w2, [x4], #1
+ ldrb w3, [x5], #1
+ subs w7, w2, w3
+ cbz w2, 0f
+ cbz w3, 0f
+ beq strcmp
+0: ret
- .globl find_memnode
+ .globl find_memnode
find_memnode:
- // preserve link register
- mov xLR, x30
- mov xDTP, x0
+ // preserve link register
+ mov xLR, x30
+ mov xDTP, x0
- /*
- * Check the DTB magic at offset 0
- */
- movz w4, #:abs_g0_nc:FDT_MAGIC
- movk w4, #:abs_g1:FDT_MAGIC
- ldr w5, [xDTP]
- cmp w4, w5
- bne err_invalid_magic
+ /*
+ * Check the DTB magic at offset 0
+ */
+ movz w4, #:abs_g0_nc:FDT_MAGIC
+ movk w4, #:abs_g1:FDT_MAGIC
+ ldr w5, [xDTP]
+ cmp w4, w5
+ bne err_invalid_magic
- /*
- * Read the string offset and store it for later use
- */
- ldr w4, [xDTP, #12]
- rev w4, w4
- add xSTRTAB, xDTP, x4
+ /*
+ * Read the string offset and store it for later use
+ */
+ ldr w4, [xDTP, #12]
+ rev w4, w4
+ add xSTRTAB, xDTP, x4
- /*
- * Read the struct offset and add it to the DT pointer
- */
- ldr w5, [xDTP, #8]
- rev w5, w5
- add xDTP, xDTP, x5
+ /*
+ * Read the struct offset and add it to the DT pointer
+ */
+ ldr w5, [xDTP, #8]
+ rev w5, w5
+ add xDTP, xDTP, x5
- /*
- * Check current tag for FDT_BEGIN_NODE
- */
- ldr w5, [xDTP]
- rev w5, w5
- cmp w5, #FDT_BEGIN_NODE
- bne err_unexpected_begin_tag
+ /*
+ * Check current tag for FDT_BEGIN_NODE
+ */
+ ldr w5, [xDTP]
+ rev w5, w5
+ cmp w5, #FDT_BEGIN_NODE
+ bne err_unexpected_begin_tag
begin_node:
- mov xMEMNODE, #0
- add xDTP, xDTP, #4
+ mov xMEMNODE, #0
+ add xDTP, xDTP, #4
- /*
- * Advance xDTP past NULL terminated string
- */
-0: ldrb w4, [xDTP], #1
- cbnz w4, 0b
+ /*
+ * Advance xDTP past NULL terminated string
+ */
+0: ldrb w4, [xDTP], #1
+ cbnz w4, 0b
next_tag:
- /*
- * Align the DT pointer xDTP to the next 32-bit boundary
- */
- add xDTP, xDTP, #3
- and xDTP, xDTP, #~3
+ /*
+ * Align the DT pointer xDTP to the next 32-bit boundary
+ */
+ add xDTP, xDTP, #3
+ and xDTP, xDTP, #~3
- /*
- * Read the next tag, could be BEGIN_NODE, END_NODE, PROP, END
- */
- ldr w5, [xDTP]
- rev w5, w5
- cmp w5, #FDT_BEGIN_NODE
- beq begin_node
- cmp w5, #FDT_END_NODE
- beq end_node
- cmp w5, #FDT_PROP
- beq prop_node
- cmp w5, #FDT_END
- beq err_end_of_fdt
- b err_unexpected_tag
+ /*
+ * Read the next tag, could be BEGIN_NODE, END_NODE, PROP, END
+ */
+ ldr w5, [xDTP]
+ rev w5, w5
+ cmp w5, #FDT_BEGIN_NODE
+ beq begin_node
+ cmp w5, #FDT_END_NODE
+ beq end_node
+ cmp w5, #FDT_PROP
+ beq prop_node
+ cmp w5, #FDT_END
+ beq err_end_of_fdt
+ b err_unexpected_tag
prop_node:
- /*
- * If propname == 'reg', record as membase and memsize
- * If propname == 'device_type' and value == 'memory',
- * set the 'is_memnode' flag for this node
- */
- ldr w6, [xDTP, #4]
- add xDTP, xDTP, #12
- rev w6, w6
- mov x5, xDTP
- adr x4, _memory
- bl strcmp
+ /*
+ * If propname == 'reg', record as membase and memsize
+ * If propname == 'device_type' and value == 'memory',
+ * set the 'is_memnode' flag for this node
+ */
+ ldr w6, [xDTP, #4]
+ add xDTP, xDTP, #12
+ rev w6, w6
+ mov x5, xDTP
+ adr x4, _memory
+ bl strcmp
- /*
- * Get handle to property name
- */
- ldr w5, [xDTP, #-4]
- rev w5, w5
- add x5, xSTRTAB, x5
+ /*
+ * Get handle to property name
+ */
+ ldr w5, [xDTP, #-4]
+ rev w5, w5
+ add x5, xSTRTAB, x5
- cbz w7, check_device_type
+ cbz w7, check_device_type
- /*
- * Check for 'reg' property
- */
- adr x4, _reg
- bl strcmp
- cbnz w7, inc_and_next_tag
+ /*
+ * Check for 'reg' property
+ */
+ adr x4, _reg
+ bl strcmp
+ cbnz w7, inc_and_next_tag
- /*
- * Extract two 64-bit quantities from the 'reg' property. These values
- * will only be used if the node also turns out to have a device_type
- * property with a value of 'memory'.
- *
- * NOTE: xDTP is only guaranteed to be 32 bit aligned, and we are most
- * likely executing with the MMU off, so we cannot use 64 bit
- * wide accesses here.
- */
- ldp w4, w5, [xDTP]
- orr xMEMBASE, x4, x5, lsl #32
- ldp w4, w5, [xDTP, #8]
- orr xMEMSIZE, x4, x5, lsl #32
- rev xMEMBASE, xMEMBASE
- rev xMEMSIZE, xMEMSIZE
- orr xMEMNODE, xMEMNODE, #HAVE_REG
- b inc_and_next_tag
+ /*
+ * Extract two 64-bit quantities from the 'reg' property. These values
+ * will only be used if the node also turns out to have a device_type
+ * property with a value of 'memory'.
+ *
+ * NOTE: xDTP is only guaranteed to be 32 bit aligned, and we are most
+ * likely executing with the MMU off, so we cannot use 64 bit
+ * wide accesses here.
+ */
+ ldp w4, w5, [xDTP]
+ orr xMEMBASE, x4, x5, lsl #32
+ ldp w4, w5, [xDTP, #8]
+ orr xMEMSIZE, x4, x5, lsl #32
+ rev xMEMBASE, xMEMBASE
+ rev xMEMSIZE, xMEMSIZE
+ orr xMEMNODE, xMEMNODE, #HAVE_REG
+ b inc_and_next_tag
check_device_type:
- /*
- * Check whether the current property's name is 'device_type'
- */
- adr x4, _device_type
- bl strcmp
- cbnz w7, inc_and_next_tag
- orr xMEMNODE, xMEMNODE, #HAVE_DEVICE_TYPE
+ /*
+ * Check whether the current property's name is 'device_type'
+ */
+ adr x4, _device_type
+ bl strcmp
+ cbnz w7, inc_and_next_tag
+ orr xMEMNODE, xMEMNODE, #HAVE_DEVICE_TYPE
inc_and_next_tag:
- add xDTP, xDTP, x6
- b next_tag
+ add xDTP, xDTP, x6
+ b next_tag
end_node:
- /*
- * Check for device_type = memory and reg = xxxx
- * If we have both, we are done
- */
- add xDTP, xDTP, #4
- cmp xMEMNODE, #(HAVE_REG | HAVE_DEVICE_TYPE)
- bne next_tag
+ /*
+ * Check for device_type = memory and reg = xxxx
+ * If we have both, we are done
+ */
+ add xDTP, xDTP, #4
+ cmp xMEMNODE, #(HAVE_REG | HAVE_DEVICE_TYPE)
+ bne next_tag
- ret xLR
+ ret xLR
err_invalid_magic:
err_unexpected_begin_tag:
err_unexpected_tag:
err_end_of_fdt:
- wfi
+ wfi
------------------------------------------------------------------------------
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