/
hal.go
65 lines (49 loc) · 1.17 KB
/
hal.go
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package jmshal
import (
"github.com/BertoldVdb/jms578flash/jmsmods"
"github.com/BertoldVdb/jms578flash/scsi"
)
type JMSHal struct {
dev *scsi.SCSI
hooks []uint16
hookVersion string
unsafe bool
LogFunc func(format string, params ...any)
}
func (j *JMSHal) log(format string, params ...any) {
if j.LogFunc != nil {
j.LogFunc(format, params...)
}
}
func New(dev *scsi.SCSI, unsafe bool) (*JMSHal, error) {
d := &JMSHal{
dev: dev,
unsafe: unsafe,
}
if err := d.hookUpdateAvailable(); err != nil {
return nil, err
}
return d, nil
}
func (d *JMSHal) reopen() error {
if err := d.dev.Reopen(); err != nil {
return err
}
return d.hookUpdateAvailable()
}
func (d *JMSHal) ResetChip() error {
/* Not every firmware supports a reset command */
if err := d.dev.Write([]byte{0xff, 0x4, 0x26, 'J', 'M'}, nil); err == nil {
return d.reopen()
}
/* Try to call our own reset function */
if len(d.hooks) > 0 {
d.hookCallIndex(0, CPUContext{})
return d.reopen()
}
/* As a last resort, try to run the reset function as firmware... */
if err := d.CodeWrite(jmsmods.HookBinaryReset[5:], true, true); err != nil {
return err
}
return d.reopen()
}