Arm32: use new-style entry annotations for MMU code

Locally override SYM_PUSH_SECTION() to retain the intended section
association.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Tested-by: Luca Fancellu <luca.fancellu@arm.com> # arm
Acked-by: Julien Grall <jgrall@amazon.com>
This commit is contained in:
Jan Beulich committed 2025-04-01 12:42:39 +02:00
1 parent debe8bf537
commit 0ca25bb1be
1 file changed
+19 -18
+19 -18
View File
@@ -174,7 +174,7 @@
*
* Clobbers r0 - r5
*/
create_page_tables:
FUNC_LOCAL(create_page_tables)
/* Prepare the page-tables for mapping Xen */
mov_w r0, XEN_VIRT_START
@@ -263,7 +263,7 @@ use_temporary_mapping:
mov r12, #1 /* r12 := temporary mapping created */
mov pc, lr
ENDPROC(create_page_tables)
END(create_page_tables)
/*
* Turn on the Data Cache and the MMU. The function will return
@@ -276,7 +276,7 @@ ENDPROC(create_page_tables)
*
* Clobbers r0 - r5
*/
enable_mmu:
FUNC_LOCAL(enable_mmu)
PRINT("- Turning on paging -\r\n")
/* Set up memory attribute type tables */
@@ -361,7 +361,7 @@ enable_mmu:
teq r12, #0
beq remove_identity_mapping
b remove_temporary_mapping
ENDPROC(enable_mmu)
END(enable_mmu)
/*
* Switch to the runtime mapping. The logic depends on whether the
@@ -381,7 +381,7 @@ ENDPROC(enable_mmu)
*
* Clobbers r0 - r4
*/
switch_to_runtime_mapping:
FUNC_LOCAL(switch_to_runtime_mapping)
/*
* Jump to the runtime mapping if the virt and phys are not
* clashing
@@ -426,7 +426,7 @@ ready_to_switch:
PRINT_ID("- Jumping to runtime address -\r\n")
mov pc, lr
ENDPROC(switch_to_runtime_mapping)
END(switch_to_runtime_mapping)
/*
* Enable mm (turn on the data cache and the MMU) for secondary CPUs.
@@ -443,7 +443,7 @@ ENDPROC(switch_to_runtime_mapping)
*
* Clobbers r0 - r6
*/
ENTRY(enable_secondary_cpu_mm)
FUNC(enable_secondary_cpu_mm)
mov r6, lr
bl create_page_tables
@@ -471,7 +471,7 @@ ENTRY(enable_secondary_cpu_mm)
/* Return to the virtual address requested by the caller. */
mov pc, r6
ENDPROC(enable_secondary_cpu_mm)
END(enable_secondary_cpu_mm)
/*
* Enable mm (turn on the data cache and the MMU) for the boot CPU.
@@ -489,7 +489,7 @@ ENDPROC(enable_secondary_cpu_mm)
*
* Clobbers r0 - r6
*/
ENTRY(enable_boot_cpu_mm)
FUNC(enable_boot_cpu_mm)
mov r6, lr
#ifdef CONFIG_EARLY_PRINTK
@@ -506,7 +506,7 @@ ENTRY(enable_boot_cpu_mm)
/* Address in the runtime mapping to jump to after the MMU is enabled */
mov lr, r6
b enable_mmu
ENDPROC(enable_boot_cpu_mm)
END(enable_boot_cpu_mm)
/*
* Remove the 1:1 map from the page-tables. It is not easy to keep track
@@ -518,7 +518,7 @@ ENDPROC(enable_boot_cpu_mm)
*
* Clobbers r0 - r3
*/
remove_identity_mapping:
FUNC_LOCAL(remove_identity_mapping)
PRINT("- Removing the identity mapping -\r\n")
/* r2:r3 := invalid page-table entry */
@@ -533,14 +533,14 @@ remove_identity_mapping:
flush_xen_tlb_local r0
mov pc, lr
ENDPROC(remove_identity_mapping)
END(remove_identity_mapping)
/*
* Remove the temporary mapping of Xen starting at TEMPORARY_XEN_VIRT_START.
*
* Clobbers r0 - r3
*/
remove_temporary_mapping:
FUNC_LOCAL(remove_temporary_mapping)
PRINT("- Removing the temporary mapping -\r\n")
/* r2:r3 := invalid page-table entry */
@@ -556,13 +556,14 @@ remove_temporary_mapping:
flush_xen_tlb_local r0
mov pc, lr
ENDPROC(remove_temporary_mapping)
END(remove_temporary_mapping)
/* Fail-stop */
fail: PRINT("- Boot failed -\r\n")
FUNC_LOCAL(fail)
PRINT("- Boot failed -\r\n")
1: wfe
b 1b
ENDPROC(fail)
END(fail)
/*
* Switch TTBR
@@ -570,7 +571,7 @@ ENDPROC(fail)
*
* TODO: This code does not comply with break-before-make.
*/
ENTRY(switch_ttbr)
FUNC(switch_ttbr)
dsb /* Ensure the flushes happen before
* continuing */
isb /* Ensure synchronization with previous
@@ -594,4 +595,4 @@ ENTRY(switch_ttbr)
isb
mov pc, lr
ENDPROC(switch_ttbr)
END(switch_ttbr)
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