arch/riscv/kernel/head.S:72: Error: illegal operands `li a1,CONFIG_PAGE_OFFSET'

From: kernel test robot
Date: Thu Jan 21 2021 - 22:17:04 EST

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Hi Atish,

First bad commit (maybe != root cause):

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 9f29bd8b2e7132b409178d1367dae1813017bd0e
commit: e557793799c5a8406afb08aa170509619f7eac36 RISC-V: Fix maximum allowed phsyical memory for RV32
date: 6 days ago
config: riscv-randconfig-r002-20210122 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project bd3a387ee76f58caa0d7901f3f84e9bb3d006f27)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e557793799c5a8406afb08aa170509619f7eac36
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout e557793799c5a8406afb08aa170509619f7eac36
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

arch/riscv/kernel/head.S: Assembler messages:
>> arch/riscv/kernel/head.S:72: Error: illegal operands `li a1,CONFIG_PAGE_OFFSET'
clang-12: error: assembler command failed with exit code 1 (use -v to see invocation)
--
In file included from arch/riscv/kernel/soc.c:7:
In file included from include/linux/pgtable.h:6:
In file included from arch/riscv/include/asm/pgtable.h:64:
>> arch/riscv/include/asm/pgtable-64.h:70:9: error: use of undeclared identifier 'UL'
return pfn_to_page(pud_val(pud) >> _PAGE_PFN_SHIFT);
^
include/asm-generic/memory_model.h:82:21: note: expanded from macro 'pfn_to_page'
#define pfn_to_page __pfn_to_page
^
include/asm-generic/memory_model.h:54:29: note: expanded from macro '__pfn_to_page'
#define __pfn_to_page(pfn) (vmemmap + (pfn))
^
arch/riscv/include/asm/pgtable.h:47:34: note: expanded from macro 'vmemmap'
#define vmemmap ((struct page *)VMEMMAP_START)
^
arch/riscv/include/asm/pgtable.h:41:24: note: expanded from macro 'VMEMMAP_START'
#define VMEMMAP_START (VMALLOC_START - VMEMMAP_SIZE)
^
arch/riscv/include/asm/pgtable.h:26:27: note: expanded from macro 'VMALLOC_START'
#define VMALLOC_START (PAGE_OFFSET - VMALLOC_SIZE)
^
arch/riscv/include/asm/page.h:34:46: note: expanded from macro 'PAGE_OFFSET'
#define PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL)
^
In file included from arch/riscv/kernel/soc.c:7:
In file included from include/linux/pgtable.h:6:
In file included from arch/riscv/include/asm/pgtable.h:64:
>> arch/riscv/include/asm/pgtable-64.h:70:9: error: use of undeclared identifier 'UL'
include/asm-generic/memory_model.h:82:21: note: expanded from macro 'pfn_to_page'
#define pfn_to_page __pfn_to_page
^
include/asm-generic/memory_model.h:54:29: note: expanded from macro '__pfn_to_page'
#define __pfn_to_page(pfn) (vmemmap + (pfn))
^
arch/riscv/include/asm/pgtable.h:47:34: note: expanded from macro 'vmemmap'
#define vmemmap ((struct page *)VMEMMAP_START)
^
note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
arch/riscv/include/asm/pgtable.h:24:27: note: expanded from macro 'VMALLOC_SIZE'
#define VMALLOC_SIZE (KERN_VIRT_SIZE >> 1)
^
arch/riscv/include/asm/page.h:36:26: note: expanded from macro 'KERN_VIRT_SIZE'
#define KERN_VIRT_SIZE (-PAGE_OFFSET)
^
arch/riscv/include/asm/page.h:34:46: note: expanded from macro 'PAGE_OFFSET'
#define PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL)
^
In file included from arch/riscv/kernel/soc.c:7:
In file included from include/linux/pgtable.h:6:
>> arch/riscv/include/asm/pgtable.h:181:9: error: use of undeclared identifier 'UL'
return pfn_to_page(pmd_val(pmd) >> _PAGE_PFN_SHIFT);
^
include/asm-generic/memory_model.h:82:21: note: expanded from macro 'pfn_to_page'
#define pfn_to_page __pfn_to_page
^
include/asm-generic/memory_model.h:54:29: note: expanded from macro '__pfn_to_page'
#define __pfn_to_page(pfn) (vmemmap + (pfn))
^
arch/riscv/include/asm/pgtable.h:47:34: note: expanded from macro 'vmemmap'
#define vmemmap ((struct page *)VMEMMAP_START)
^
arch/riscv/include/asm/pgtable.h:41:24: note: expanded from macro 'VMEMMAP_START'
#define VMEMMAP_START (VMALLOC_START - VMEMMAP_SIZE)
^
arch/riscv/include/asm/pgtable.h:26:27: note: expanded from macro 'VMALLOC_START'
#define VMALLOC_START (PAGE_OFFSET - VMALLOC_SIZE)
^
arch/riscv/include/asm/page.h:34:46: note: expanded from macro 'PAGE_OFFSET'
#define PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL)
^
In file included from arch/riscv/kernel/soc.c:7:
In file included from include/linux/pgtable.h:6:
>> arch/riscv/include/asm/pgtable.h:181:9: error: use of undeclared identifier 'UL'
include/asm-generic/memory_model.h:82:21: note: expanded from macro 'pfn_to_page'
#define pfn_to_page __pfn_to_page
^
include/asm-generic/memory_model.h:54:29: note: expanded from macro '__pfn_to_page'
#define __pfn_to_page(pfn) (vmemmap + (pfn))
^
arch/riscv/include/asm/pgtable.h:47:34: note: expanded from macro 'vmemmap'
#define vmemmap ((struct page *)VMEMMAP_START)
^
note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
arch/riscv/include/asm/pgtable.h:24:27: note: expanded from macro 'VMALLOC_SIZE'
#define VMALLOC_SIZE (KERN_VIRT_SIZE >> 1)
^
arch/riscv/include/asm/page.h:36:26: note: expanded from macro 'KERN_VIRT_SIZE'
#define KERN_VIRT_SIZE (-PAGE_OFFSET)
^
arch/riscv/include/asm/page.h:34:46: note: expanded from macro 'PAGE_OFFSET'
#define PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL)
^
4 errors generated.
--
In file included from arch/riscv/kernel/irq.c:8:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:10:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:15:
In file included from include/linux/pgtable.h:6:
In file included from arch/riscv/include/asm/pgtable.h:64:
>> arch/riscv/include/asm/pgtable-64.h:70:9: error: use of undeclared identifier 'UL'
return pfn_to_page(pud_val(pud) >> _PAGE_PFN_SHIFT);
^
include/asm-generic/memory_model.h:82:21: note: expanded from macro 'pfn_to_page'
#define pfn_to_page __pfn_to_page
^
include/asm-generic/memory_model.h:54:29: note: expanded from macro '__pfn_to_page'
#define __pfn_to_page(pfn) (vmemmap + (pfn))
^
arch/riscv/include/asm/pgtable.h:47:34: note: expanded from macro 'vmemmap'
#define vmemmap ((struct page *)VMEMMAP_START)
^
arch/riscv/include/asm/pgtable.h:41:24: note: expanded from macro 'VMEMMAP_START'
#define VMEMMAP_START (VMALLOC_START - VMEMMAP_SIZE)
^
arch/riscv/include/asm/pgtable.h:26:27: note: expanded from macro 'VMALLOC_START'
#define VMALLOC_START (PAGE_OFFSET - VMALLOC_SIZE)
^
arch/riscv/include/asm/page.h:34:46: note: expanded from macro 'PAGE_OFFSET'
#define PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL)
^
In file included from arch/riscv/kernel/irq.c:8:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:10:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:15:
In file included from include/linux/pgtable.h:6:
In file included from arch/riscv/include/asm/pgtable.h:64:
>> arch/riscv/include/asm/pgtable-64.h:70:9: error: use of undeclared identifier 'UL'
include/asm-generic/memory_model.h:82:21: note: expanded from macro 'pfn_to_page'
#define pfn_to_page __pfn_to_page
^
include/asm-generic/memory_model.h:54:29: note: expanded from macro '__pfn_to_page'
#define __pfn_to_page(pfn) (vmemmap + (pfn))
^
arch/riscv/include/asm/pgtable.h:47:34: note: expanded from macro 'vmemmap'
#define vmemmap ((struct page *)VMEMMAP_START)
^
note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
arch/riscv/include/asm/pgtable.h:24:27: note: expanded from macro 'VMALLOC_SIZE'
#define VMALLOC_SIZE (KERN_VIRT_SIZE >> 1)
^
arch/riscv/include/asm/page.h:36:26: note: expanded from macro 'KERN_VIRT_SIZE'
#define KERN_VIRT_SIZE (-PAGE_OFFSET)
^
arch/riscv/include/asm/page.h:34:46: note: expanded from macro 'PAGE_OFFSET'
#define PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL)
^
In file included from arch/riscv/kernel/irq.c:8:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:10:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:15:
In file included from include/linux/pgtable.h:6:
>> arch/riscv/include/asm/pgtable.h:181:9: error: use of undeclared identifier 'UL'
return pfn_to_page(pmd_val(pmd) >> _PAGE_PFN_SHIFT);
^
include/asm-generic/memory_model.h:82:21: note: expanded from macro 'pfn_to_page'
#define pfn_to_page __pfn_to_page
^
include/asm-generic/memory_model.h:54:29: note: expanded from macro '__pfn_to_page'
#define __pfn_to_page(pfn) (vmemmap + (pfn))
^
arch/riscv/include/asm/pgtable.h:47:34: note: expanded from macro 'vmemmap'
#define vmemmap ((struct page *)VMEMMAP_START)
^
arch/riscv/include/asm/pgtable.h:41:24: note: expanded from macro 'VMEMMAP_START'
#define VMEMMAP_START (VMALLOC_START - VMEMMAP_SIZE)
^
arch/riscv/include/asm/pgtable.h:26:27: note: expanded from macro 'VMALLOC_START'
#define VMALLOC_START (PAGE_OFFSET - VMALLOC_SIZE)
^
arch/riscv/include/asm/page.h:34:46: note: expanded from macro 'PAGE_OFFSET'
#define PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL)
^
In file included from arch/riscv/kernel/irq.c:8:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:10:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:15:
In file included from include/linux/pgtable.h:6:
>> arch/riscv/include/asm/pgtable.h:181:9: error: use of undeclared identifier 'UL'
include/asm-generic/memory_model.h:82:21: note: expanded from macro 'pfn_to_page'
#define pfn_to_page __pfn_to_page
^
include/asm-generic/memory_model.h:54:29: note: expanded from macro '__pfn_to_page'
#define __pfn_to_page(pfn) (vmemmap + (pfn))
^
arch/riscv/include/asm/pgtable.h:47:34: note: expanded from macro 'vmemmap'
#define vmemmap ((struct page *)VMEMMAP_START)
^
note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
arch/riscv/include/asm/pgtable.h:24:27: note: expanded from macro 'VMALLOC_SIZE'
#define VMALLOC_SIZE (KERN_VIRT_SIZE >> 1)
^
arch/riscv/include/asm/page.h:36:26: note: expanded from macro 'KERN_VIRT_SIZE'
#define KERN_VIRT_SIZE (-PAGE_OFFSET)
^
arch/riscv/include/asm/page.h:34:46: note: expanded from macro 'PAGE_OFFSET'
#define PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL)
^
In file included from arch/riscv/kernel/irq.c:8:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:10:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:149:
>> include/asm-generic/io.h:556:9: error: use of undeclared identifier 'UL'
return inb(addr);
^
arch/riscv/include/asm/io.h:55:65: note: expanded from macro 'inb'
#define inb(c) ({ u8 __v; __io_pbr(); __v = readb_cpu((void*)(PCI_IOBASE + (c))); __io_par(__v); __v; })
^
arch/riscv/include/asm/io.h:30:38: note: expanded from macro 'PCI_IOBASE'
#define PCI_IOBASE ((void __iomem *)PCI_IO_START)
^
arch/riscv/include/asm/pgtable.h:51:27: note: expanded from macro 'PCI_IO_START'
#define PCI_IO_START (PCI_IO_END - PCI_IO_SIZE)
^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
arch/riscv/include/asm/pgtable.h:41:24: note: expanded from macro 'VMEMMAP_START'
#define VMEMMAP_START (VMALLOC_START - VMEMMAP_SIZE)
^
arch/riscv/include/asm/pgtable.h:26:27: note: expanded from macro 'VMALLOC_START'
#define VMALLOC_START (PAGE_OFFSET - VMALLOC_SIZE)
^
arch/riscv/include/asm/page.h:34:46: note: expanded from macro 'PAGE_OFFSET'
#define PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL)
^
In file included from arch/riscv/kernel/irq.c:8:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:10:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:149:
>> include/asm-generic/io.h:556:9: error: use of undeclared identifier 'UL'
arch/riscv/include/asm/io.h:55:65: note: expanded from macro 'inb'
#define inb(c) ({ u8 __v; __io_pbr(); __v = readb_cpu((void*)(PCI_IOBASE + (c))); __io_par(__v); __v; })
^
arch/riscv/include/asm/io.h:30:38: note: expanded from macro 'PCI_IOBASE'
#define PCI_IOBASE ((void __iomem *)PCI_IO_START)
^
arch/riscv/include/asm/pgtable.h:51:27: note: expanded from macro 'PCI_IO_START'
#define PCI_IO_START (PCI_IO_END - PCI_IO_SIZE)
^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
arch/riscv/include/asm/pgtable.h:24:27: note: expanded from macro 'VMALLOC_SIZE'
#define VMALLOC_SIZE (KERN_VIRT_SIZE >> 1)
^
arch/riscv/include/asm/page.h:36:26: note: expanded from macro 'KERN_VIRT_SIZE'
#define KERN_VIRT_SIZE (-PAGE_OFFSET)
^
arch/riscv/include/asm/page.h:34:46: note: expanded from macro 'PAGE_OFFSET'
#define PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL)
^
In file included from arch/riscv/kernel/irq.c:8:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:10:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:149:
include/asm-generic/io.h:564:9: error: use of undeclared identifier 'UL'
return inw(addr);
^
arch/riscv/include/asm/io.h:56:65: note: expanded from macro 'inw'
#define inw(c) ({ u16 __v; __io_pbr(); __v = readw_cpu((void*)(PCI_IOBASE + (c))); __io_par(__v); __v; })
^
arch/riscv/include/asm/io.h:30:38: note: expanded from macro 'PCI_IOBASE'
#define PCI_IOBASE ((void __iomem *)PCI_IO_START)
^
arch/riscv/include/asm/pgtable.h:51:27: note: expanded from macro 'PCI_IO_START'
#define PCI_IO_START (PCI_IO_END - PCI_IO_SIZE)
^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
arch/riscv/include/asm/pgtable.h:41:24: note: expanded from macro 'VMEMMAP_START'
#define VMEMMAP_START (VMALLOC_START - VMEMMAP_SIZE)
^
arch/riscv/include/asm/pgtable.h:26:27: note: expanded from macro 'VMALLOC_START'
#define VMALLOC_START (PAGE_OFFSET - VMALLOC_SIZE)
^
arch/riscv/include/asm/page.h:34:46: note: expanded from macro 'PAGE_OFFSET'
#define PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL)
^
In file included from arch/riscv/kernel/irq.c:8:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:10:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:149:
include/asm-generic/io.h:564:9: error: use of undeclared identifier 'UL'
arch/riscv/include/asm/io.h:56:65: note: expanded from macro 'inw'
#define inw(c) ({ u16 __v; __io_pbr(); __v = readw_cpu((void*)(PCI_IOBASE + (c))); __io_par(__v); __v; })
^
arch/riscv/include/asm/io.h:30:38: note: expanded from macro 'PCI_IOBASE'
#define PCI_IOBASE ((void __iomem *)PCI_IO_START)
^
arch/riscv/include/asm/pgtable.h:51:27: note: expanded from macro 'PCI_IO_START'
#define PCI_IO_START (PCI_IO_END - PCI_IO_SIZE)
^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
arch/riscv/include/asm/pgtable.h:24:27: note: expanded from macro 'VMALLOC_SIZE'
#define VMALLOC_SIZE (KERN_VIRT_SIZE >> 1)
^
arch/riscv/include/asm/page.h:36:26: note: expanded from macro 'KERN_VIRT_SIZE'
#define KERN_VIRT_SIZE (-PAGE_OFFSET)
^
arch/riscv/include/asm/page.h:34:46: note: expanded from macro 'PAGE_OFFSET'
#define PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL)
^
In file included from arch/riscv/kernel/irq.c:8:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:10:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:149:
include/asm-generic/io.h:572:9: error: use of undeclared identifier 'UL'
return inl(addr);
^
arch/riscv/include/asm/io.h:57:65: note: expanded from macro 'inl'
#define inl(c) ({ u32 __v; __io_pbr(); __v = readl_cpu((void*)(PCI_IOBASE + (c))); __io_par(__v); __v; })
^
arch/riscv/include/asm/io.h:30:38: note: expanded from macro 'PCI_IOBASE'
#define PCI_IOBASE ((void __iomem *)PCI_IO_START)
^
arch/riscv/include/asm/pgtable.h:51:27: note: expanded from macro 'PCI_IO_START'
#define PCI_IO_START (PCI_IO_END - PCI_IO_SIZE)
^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
arch/riscv/include/asm/pgtable.h:41:24: note: expanded from macro 'VMEMMAP_START'
#define VMEMMAP_START (VMALLOC_START - VMEMMAP_SIZE)
..

vim +72 arch/riscv/kernel/head.S

0f327f2aaad6a873 Atish Patra 2019-06-06 67
e011995e826f85fb Atish Patra 2020-03-17 68 .align 2
e011995e826f85fb Atish Patra 2020-03-17 69 #ifdef CONFIG_MMU
e011995e826f85fb Atish Patra 2020-03-17 70 relocate:
e011995e826f85fb Atish Patra 2020-03-17 71 /* Relocate return address */
e011995e826f85fb Atish Patra 2020-03-17 @72 li a1, PAGE_OFFSET
e011995e826f85fb Atish Patra 2020-03-17 73 la a2, _start
e011995e826f85fb Atish Patra 2020-03-17 74 sub a1, a1, a2
e011995e826f85fb Atish Patra 2020-03-17 75 add ra, ra, a1
e011995e826f85fb Atish Patra 2020-03-17 76
e011995e826f85fb Atish Patra 2020-03-17 77 /* Point stvec to virtual address of intruction after satp write */
e011995e826f85fb Atish Patra 2020-03-17 78 la a2, 1f
e011995e826f85fb Atish Patra 2020-03-17 79 add a2, a2, a1
e011995e826f85fb Atish Patra 2020-03-17 80 csrw CSR_TVEC, a2
e011995e826f85fb Atish Patra 2020-03-17 81
e011995e826f85fb Atish Patra 2020-03-17 82 /* Compute satp for kernel page tables, but don't load it yet */
e011995e826f85fb Atish Patra 2020-03-17 83 srl a2, a0, PAGE_SHIFT
e011995e826f85fb Atish Patra 2020-03-17 84 li a1, SATP_MODE
e011995e826f85fb Atish Patra 2020-03-17 85 or a2, a2, a1
e011995e826f85fb Atish Patra 2020-03-17 86
e011995e826f85fb Atish Patra 2020-03-17 87 /*
e011995e826f85fb Atish Patra 2020-03-17 88 * Load trampoline page directory, which will cause us to trap to
e011995e826f85fb Atish Patra 2020-03-17 89 * stvec if VA != PA, or simply fall through if VA == PA. We need a
e011995e826f85fb Atish Patra 2020-03-17 90 * full fence here because setup_vm() just wrote these PTEs and we need
e011995e826f85fb Atish Patra 2020-03-17 91 * to ensure the new translations are in use.
e011995e826f85fb Atish Patra 2020-03-17 92 */
e011995e826f85fb Atish Patra 2020-03-17 93 la a0, trampoline_pg_dir
e011995e826f85fb Atish Patra 2020-03-17 94 srl a0, a0, PAGE_SHIFT
e011995e826f85fb Atish Patra 2020-03-17 95 or a0, a0, a1
e011995e826f85fb Atish Patra 2020-03-17 96 sfence.vma
e011995e826f85fb Atish Patra 2020-03-17 97 csrw CSR_SATP, a0
e011995e826f85fb Atish Patra 2020-03-17 98 .align 2
e011995e826f85fb Atish Patra 2020-03-17 99 1:
76d4467a97bd8c4b Qiu Wenbo 2020-08-13 100 /* Set trap vector to spin forever to help debug */
76d4467a97bd8c4b Qiu Wenbo 2020-08-13 101 la a0, .Lsecondary_park
e011995e826f85fb Atish Patra 2020-03-17 102 csrw CSR_TVEC, a0
e011995e826f85fb Atish Patra 2020-03-17 103
e011995e826f85fb Atish Patra 2020-03-17 104 /* Reload the global pointer */
e011995e826f85fb Atish Patra 2020-03-17 105 .option push
e011995e826f85fb Atish Patra 2020-03-17 106 .option norelax
e011995e826f85fb Atish Patra 2020-03-17 107 la gp, __global_pointer$
e011995e826f85fb Atish Patra 2020-03-17 108 .option pop
e011995e826f85fb Atish Patra 2020-03-17 109
e011995e826f85fb Atish Patra 2020-03-17 110 /*
e011995e826f85fb Atish Patra 2020-03-17 111 * Switch to kernel page tables. A full fence is necessary in order to
e011995e826f85fb Atish Patra 2020-03-17 112 * avoid using the trampoline translations, which are only correct for
e011995e826f85fb Atish Patra 2020-03-17 113 * the first superpage. Fetching the fence is guarnteed to work
e011995e826f85fb Atish Patra 2020-03-17 114 * because that first superpage is translated the same way.
e011995e826f85fb Atish Patra 2020-03-17 115 */
e011995e826f85fb Atish Patra 2020-03-17 116 csrw CSR_SATP, a2
e011995e826f85fb Atish Patra 2020-03-17 117 sfence.vma
e011995e826f85fb Atish Patra 2020-03-17 118
e011995e826f85fb Atish Patra 2020-03-17 119 ret
e011995e826f85fb Atish Patra 2020-03-17 120 #endif /* CONFIG_MMU */
e011995e826f85fb Atish Patra 2020-03-17 121 #ifdef CONFIG_SMP
cfafe260137418d0 Atish Patra 2020-03-17 122 .global secondary_start_sbi
cfafe260137418d0 Atish Patra 2020-03-17 123 secondary_start_sbi:
cfafe260137418d0 Atish Patra 2020-03-17 124 /* Mask all interrupts */
cfafe260137418d0 Atish Patra 2020-03-17 125 csrw CSR_IE, zero
cfafe260137418d0 Atish Patra 2020-03-17 126 csrw CSR_IP, zero
cfafe260137418d0 Atish Patra 2020-03-17 127
cfafe260137418d0 Atish Patra 2020-03-17 128 /* Load the global pointer */
cfafe260137418d0 Atish Patra 2020-03-17 129 .option push
cfafe260137418d0 Atish Patra 2020-03-17 130 .option norelax
cfafe260137418d0 Atish Patra 2020-03-17 131 la gp, __global_pointer$
cfafe260137418d0 Atish Patra 2020-03-17 132 .option pop
cfafe260137418d0 Atish Patra 2020-03-17 133
cfafe260137418d0 Atish Patra 2020-03-17 134 /*
cfafe260137418d0 Atish Patra 2020-03-17 135 * Disable FPU to detect illegal usage of
cfafe260137418d0 Atish Patra 2020-03-17 136 * floating point in kernel space
cfafe260137418d0 Atish Patra 2020-03-17 137 */
cfafe260137418d0 Atish Patra 2020-03-17 138 li t0, SR_FS
cfafe260137418d0 Atish Patra 2020-03-17 139 csrc CSR_STATUS, t0
cfafe260137418d0 Atish Patra 2020-03-17 140
e011995e826f85fb Atish Patra 2020-03-17 141 /* Set trap vector to spin forever to help debug */
e011995e826f85fb Atish Patra 2020-03-17 142 la a3, .Lsecondary_park
e011995e826f85fb Atish Patra 2020-03-17 143 csrw CSR_TVEC, a3
e011995e826f85fb Atish Patra 2020-03-17 144
e011995e826f85fb Atish Patra 2020-03-17 145 slli a3, a0, LGREG
cfafe260137418d0 Atish Patra 2020-03-17 146 la a4, __cpu_up_stack_pointer
cfafe260137418d0 Atish Patra 2020-03-17 147 la a5, __cpu_up_task_pointer
cfafe260137418d0 Atish Patra 2020-03-17 148 add a4, a3, a4
cfafe260137418d0 Atish Patra 2020-03-17 149 add a5, a3, a5
cfafe260137418d0 Atish Patra 2020-03-17 150 REG_L sp, (a4)
cfafe260137418d0 Atish Patra 2020-03-17 151 REG_L tp, (a5)
cfafe260137418d0 Atish Patra 2020-03-17 152
e011995e826f85fb Atish Patra 2020-03-17 153 .global secondary_start_common
e011995e826f85fb Atish Patra 2020-03-17 154 secondary_start_common:
e011995e826f85fb Atish Patra 2020-03-17 155

:::::: The code at line 72 was first introduced by commit
:::::: e011995e826f85fbe55dc7d4ce649461163d1052 RISC-V: Move relocate and few other functions out of __init

:::::: TO: Atish Patra <atish.patra@xxxxxxx>
:::::: CC: Palmer Dabbelt <palmerdabbelt@xxxxxxxxxx>

---
0-DAY CI Kernel Test Service, Intel Corporation
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