Does a defendant have to obtain a certificate of probable cause to challenge the maximum allowable term in a criminal charge?

In addition, defendant's attempt to raise constitutional challenges to the gang registration order does not permit him to avoid the procedural requirements of section 1237.5. For example, "the maximum allowable term reached in a charge bargain, and agreed to by the defendant, is 'part and parcel' of the plea agreement. Consequently, a defendant is required to obtain a certificate of probable cause before challenging the trial court's authority to impose the maximum allowable term reached in a charge bargain," and a certificate is required to raise the argument that the agreed-upon sentence constitutes cruel and/or unusual punishment and violates the double jeopardy provisions of the federal and state constitutions. (People v. Rushing (2008) 168 Cal.App.4th 354, 361-362; People v. Cuevas (2008) 44 Cal.4th 374, 381-382.)