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unmanaged drives

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This commit is contained in:
IonutParau
2026-02-24 13:13:02 +01:00
parent e94b656436
commit cbf6b555e9
6 changed files with 677 additions and 70 deletions
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85
rewrite/minBIOS.lua
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@@ -15,7 +15,7 @@ end
if gpu and screen then
component.invoke(gpu, "bind", screen)
local w, h = component.invoke(gpu, "maxResolution")
component.invoke(gpu, "maxResolution")
component.invoke(gpu, "setResolution", w, h)
component.invoke(gpu, "setForeground", 0xFFFFFF)
component.invoke(gpu, "setBackground", 0x000000)
component.invoke(gpu, "fill", 1, 1, w, h, " ")
@@ -56,6 +56,7 @@ local function getBootCode(addr)
-- Read first 32K, which is a standard convention
local sectorsIn32K = math.ceil(32768 / sectorSize)
local bootCode = {firstSector}
-- since its null terminated, this is an optimization
if not firstSector:find("\0") then
for i=2,sectorsIn32K do
local sec = drive.readSector(i)
@@ -76,33 +77,13 @@ local paths = {
"boot/pipes/kernel",
}
local prevboot = computer.getBootAddress()
if prevboot then
if component.type(prevboot) == "filesystem" then
for _, path in ipairs(paths) do
local code = romRead(prevboot, path)
if code then
assert(load(code))(prevboot)
error("halted")
end
end
end
if component.type(prevboot) == "drive" then
local f = getBootCode(prevboot)
if f then
f(prevboot)
error("halted")
end
end
end
local bootables = {}
for addr in component.list("filesystem", true) do
for _, path in ipairs(paths) do
local code = romRead(addr, path)
if code then
computer.setBootAddress(addr)
assert(load(code))(addr)
error("halted")
table.insert(bootables, {addr = addr, code = load(code)})
end
end
end
@@ -110,10 +91,62 @@ end
for addr in component.list("drive", true) do
local f = getBootCode(addr)
if f then
computer.setBootAddress(addr)
f(addr)
error("halted")
table.insert(bootables, {code = f, addr = addr})
end
end
local function boot(bootable)
local w, h = component.invoke(gpu, "maxResolution")
component.invoke(gpu, "setResolution", w, h)
component.invoke(gpu, "setForeground", 0xFFFFFF)
component.invoke(gpu, "setBackground", 0x000000)
component.invoke(gpu, "fill", 1, 1, w, h, " ")
computer.setBootAddress(bootable.addr)
bootable.code(bootable.addr)
error("halted")
end
if #bootables == 1 then
boot(bootables[1])
elseif #bootables > 1 then
local sel = 1
local function showBootable(bootable, i)
local w = component.invoke(gpu, "getResolution")
component.invoke(gpu, "fill", 1, i, w, 1, " ")
local text = component.invoke(bootable.addr, "getLabel") or bootable.addr
component.invoke(gpu, "set", 1, i, text)
end
for i=1,#bootables do
if i == 1 then
component.invoke(gpu, "setForeground", 0x000000)
component.invoke(gpu, "setBackground", 0xFFFFFF)
else
component.invoke(gpu, "setForeground", 0xFFFFFF)
component.invoke(gpu, "setBackground", 0x000000)
end
showBootable(bootables[i], i)
end
while true do
local e = {computer.pullSignal()}
if e[1] == "key_down" then
local keycode = e[4]
component.invoke(gpu, "setForeground", 0xFFFFFF)
component.invoke(gpu, "setBackground", 0x000000)
showBootable(bootables[sel], sel)
if keycode == 0x1C then
break
elseif keycode == 0xC8 then
sel = math.max(sel - 1, 1)
elseif keycode == 0xD0 then
sel = math.min(sel + 1, #bootables)
end
component.invoke(gpu, "setForeground", 0x000000)
component.invoke(gpu, "setBackground", 0xFFFFFF)
showBootable(bootables[sel], sel)
end
end
boot(bootables[sel])
end
error("no bootable medium found")