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Add a function that reboots the system by attempting the softest method
and incrementally becoming forceful if previous methods fail
Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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The host needs to wait for the controller to be ready by polling the CNR
bit as per section 4.2 of the spec
Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Introduce programming interface based lookups for devices with different
kinds of interfaces
Signed-off-by: Ian Moffett <ian@osmora.org>
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Some devices are identified by very specific programming interfaces,
therefore this is important to have.
Signed-off-by: Ian Moffett <ian@osmora.org>
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Instead of using bitfields to say which kind identification we are
doing, it is a better idea to just use the lookup type directly as it is
more scalable
Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Introduce a getargv system call that allows one to fetch an argument
string using an index into the argument vector.
Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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This commit introduces the initial support for the process environment
block and implements argv and argc.
Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Add text mode cursor which is the inversion of the console background
color.
Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Expose I/O taps to userland using a tap message interface. An
application may construct a tap message to send to the kernel requesting
data from a specific tap, if there is data, the buffers will be safely
populated, otherwise some error returned.
An example is accessing the PS/2 keyboard tap:
--
char name[] = "i8042.port.0";
char buf[2] = {0, 0};
struct iotap_msg msg = {
.opcode = IOTAP_OPC_READ,
.buf = buf,
.len = len
};
...
/* muxtap() may be used */
...
--
Signed-off-by: Ian Moffett <ian@osmora.org>
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The concept of resource borders is mostly used for resources that can
easily be mapped into memory, synced and contain attributes. However,
some things (e.g., a network resource, keyboard input, etc) may not be
great with raw memory mappings. This commit mitigates this problem.
Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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This commit reserves the first 64 vectors for the I/O APIC input lines.
During an IRQ, each handler will be called to see which one handles it.
Signed-off-by: Ian Moffett <ian@osmora.org>
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This commit introduces the interrupt registration framework for L5 and
accounts for I/O APIC IRQ inputs, and interrupt priority levels encoded
within bits 7:4 of the interrupt vector
Signed-off-by: Ian Moffett <ian@osmora.org>
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Introduce a helper function to convert legacy ISA IRQ numbers to the GSI
numbers assigned to an I/O APIC pin
Signed-off-by: Ian Moffett <ian@osmora.org>
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The I/O tap framework provides a way to bypass the typical device
filesystem interface for applications where more direct access would be
beneficial.
Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Keep track of how many referencing are on a vnode so one isn't freed
early while another object is still using it.
Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Introduce the fd_open() function as apart of the kernel file
descriptor API to open a file and get a file descriptor.
Signed-off-by: Ian Moffett <ian@osmora.org>
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This commit introduces the system call for mounting filesystems. As of
now, only the fstype and target params are supported
Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Introduce a process environment block structure to pass information such
as arguments, argument counts, etc to the process during startup without
having to make a mess on the stack
Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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Introduce support for returning symbols or strings in memory by using
the symbol table and REX prefixes for 64-bit register accesses
Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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This commit adds a lookup ID to each symbol as well as ensuring that
they have a defined name even if the requested one is NULL
Signed-off-by: Ian Moffett <ian@osmora.org>
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Introduce register allocation via a bitmap where each bit corresponds to
a specific register index.
Signed-off-by: Ian Moffett <ian@osmora.org>
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