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CMake: Generate device headers from DTS for spike

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The DTS compilation was arm platforms only. Moving it to the top level
config file, making it available to RISCV platforms. The generated files
are almost identical with minor differences. A new argument(--arch) is
added to the hardware_gen.py for the differences.
This commit is contained in:
Siwei Zhuang
2019-06-20 15:27:08 +10:00
parent 7c8938bdbe
commit 375a98c8b3
28 changed files with 722 additions and 852 deletions
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43
tools/hardware_gen.py
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@@ -833,6 +833,7 @@ HEADER_TEMPLATE = """
#ifndef __ASSEMBLER__
{% if kernel -%}
static const kernel_frame_t BOOT_RODATA kernel_devices[] = {
{% for reg in kernel %}{{ reg.get_macro_string() }}
{ /* {{ ' '.join(sorted(reg.names)) }} */
@@ -843,13 +844,18 @@ static const kernel_frame_t BOOT_RODATA kernel_devices[] = {
/* region contains {{ ', '.join(reg.var_names) }} */
{{ "KDEV_PPTR + 0x%x" % reg.kaddr }},
{%- endif %}
{% if args.arch == 'arm' -%}
{{ "true" if reg.executeNever else "false" }} /* armExecuteNever */
{%- endif %}
},
{% if reg.get_macro_end() -%}
{{ reg.get_macro_end()}}
{% endif -%}
{% endfor %}
};
{% else -%}
static const kernel_frame_t BOOT_RODATA *kernel_devices = NULL;
{% endif -%}
static const p_region_t BOOT_RODATA avail_p_regs[] = {
{%- for reg in memory %}
@@ -857,6 +863,7 @@ static const p_region_t BOOT_RODATA avail_p_regs[] = {
{%- endfor %}
};
{% if devices -%}
static const p_region_t BOOT_RODATA dev_p_regs[] = {
{%- for reg in devices %}
{%- if reg.user_macro %}
@@ -868,6 +875,9 @@ static const p_region_t BOOT_RODATA dev_p_regs[] = {
{%- endif %}
{%- endfor %}
};
{% else -%}
static const p_region_t BOOT_RODATA *dev_p_regs = NULL;
{% endif -%}
#endif /* !__ASSEMBLER__ */
@@ -891,10 +901,12 @@ static const p_region_t BOOT_RODATA dev_p_regs[] = {
def add_build_rules(devices, output):
devices[-1] = devices[-1] + ";"
# print result to cmake variable
print(';'.join(devices), file=output)
if devices:
devices[-1] = devices[-1] + ";"
# print result to cmake variable
print(';'.join(devices), file=output)
MEGA_PAGE_SIZE = 0x200000
def output_regions(args, devices, memory, kernel, irqs, fp):
""" generate the device list for the C header file """
@@ -929,14 +941,22 @@ def output_regions(args, devices, memory, kernel, irqs, fp):
kernel += extra_kernel
kernel.sort(key=lambda a: a.start)
# make sure physBase is at least 16MB (supersection) aligned for the ELF loader's sake.
# TODO: this may need to be larger for aarch64. It seems to work OK on currently supported platforms though.
#
# XXX: This also assumes that the kernel image is the first memory region
# described, and propgates that assumption forward. What enforces that?
paddr = align_up(memory[0].start, 1 << args.phys_align)
memory[0].size -= paddr - memory[0].start
memory[0].start = paddr
if args.arch == 'arm':
# make sure physBase is at least 16MB (supersection) aligned for the ELF loader's sake.
# TODO: this may need to be larger for aarch64. It seems to work OK on currently supported platforms though.
#
# XXX: This also assumes that the kernel image is the first memory region
# described, and propagates that assumption forward. What enforces that?
paddr = align_up(memory[0].start, 1 << args.phys_align)
memory[0].size -= paddr - memory[0].start
memory[0].start = paddr
elif args.arch == 'riscv':
# BBL is loaded to the physical memory starting from "memory[0].start".
# Moving up the start to skip the BBL memory, making it unavailable
# to the kernel.
paddr = memory[0].start
memory[0].start += MEGA_PAGE_SIZE
memory[0].size -= MEGA_PAGE_SIZE
# Write out what we need to consume in YAML format.
yaml_out = {
@@ -1036,6 +1056,7 @@ if __name__ == '__main__':
parser.add_argument('--page-bits', help='number of bits per page', default=12, type=int)
parser.add_argument(
'--phys-align', help='alignment in bits of the base address of the kernel', default=24, type=int)
parser.add_argument('--arch', help='arch of the targeting platform', default="arm")
args = parser.parse_args()
main(args)
else: