Sit him down and tell him that it seems that you both have different ideas of what partnership and parenthood and SHARING A LIFE mean. That's fine, you can't force him to be something he's not. But tell him that, sadly, if he wants to live a life where he just tends to his own needs and what he sees as important, you will have to do the same, otherwise things won't be fair - as is the case now. Inform him that unless something benefits you and your job (which is - remind him! - looking after the baby, NOT being a domestic servant) then it won't get done. For example, you will no longer handle his washing or ironing. You will cook meals for when they are convenient for you. Things within the home (which is your default workplace right now) will be arranged to benefit YOU just as things at his workplace take no account of your needs. In other words, things will be reorganised so that both adults are equally facilitated.
Not fair on him because he works long hours... How so? By definition, if HE is working long hours, so are you, as he is not there to take over parenting. While you are a SAHM, your hours are always going to be as long as his.
It's not his fault, he just forgets? - Well then if everything connected with home is so insignificant to him, then that will be fine, won't it? When he has no clean ironed shirts, if it's so unimportant anyway, then it won't be an issue, will it? Let's see. :)
If, as I suspect, he starts kicking up a fuss when things aren't done by you to facilitate his working life, point out that he feels fine about failing to do things that facilitate yours. That marriages that LAST do so on mutual respect and generosity. That if he continues to work to a script that sees home as 'small', 'unimportant' 'womens' stuff' - he might just come home one day to find that he no longer has one. That he only gets to be a father with a career because he has a wife stepping into his parenting shoes during the working day. Ask him how important he feels his highly responsible job is and how great he'd feel about it if it was all he had - if he got to go home to an empty flat and a takeaway every night. Make him think, get him to read Wifework (as suggested above) and make it very, very, very clear that he is lucky to have a wife who loves him enough to give him a clear warning.
This is the warning.